BOSTON (AP) -- Seven days after the Boston Marathon bombings, the city was bustling Monday, with runners hitting the pavement, children walking to school and enough cars clogging the streets to make the morning commute feel almost back to normal in the hours before the traumatic week would be marked with mournful silence.
Massachusetts Gov. Deval Patrick has asked residents to observe a moment of silence at 2:50 p.m. Monday, the time the first of the two bombs exploded near the finish line. Bells will toll across the city and state after the minute-long tribute to the victims.
The surviving suspect, 19-year-old Dzhokhar Tsarnaev, remained in serious condition in a hospital with a wound to his neck. His older brother, 26-year-old Tamerlan, was killed during a furious getaway attempt.
Many Boston residents headed back to workplaces and schools for the first time since a dramatic week came to an even more dramatic end. Traffic was heavy on major arteries into the city Monday morning, and nervous parents dropped their children off at schools, some for the first time since the attacks.
Authorities on Friday had made the unprecedented request that residents stay at home during the manhunt for suspect Dzhokhar Tsarnaev. He was discovered that evening hiding in a boat covered by a tarp in suburban Watertown.
At the Snowden International School on Newbury Street, a high school set just a block from the bombing site, jittery parents dropped off children as teachers - some of whom had run in the race - greeted each other with hugs.
Carlotta Martin, 49, of Boston, said that leaving her kids at school has been the hardest part of getting back to normal.
"We're right in the middle of things," Martin said outside the school as her children, 17-year-old twins and a 15-year-old, walked in, glancing at the police barricades a few yards from the school's front door.
"I'm nervous. Hopefully, this stuff is over," she continued. "I told my daughter to text me so I know everything's okay."
The city is beginning to reopen sections of the six-block site around the bombing that killed three people and wounded more than 180.
Tsarnaev remained hospitalized and unable to speak, with a gunshot wound to the throat. He was expected to be charged by federal authorities. The 19-year-old also is likely to face state charges in connection with the fatal shooting of MIT police officer Sean Collier in Cambridge, said Stephanie Guyotte, a spokeswoman for the Middlesex District Attorney's office.
On Norfolk Street, where the brothers lived, neighbors said they thought they saw some more detectives Monday morning. But unlike Friday, the street was open.
Outside City Paint, the paint store a half-block from the brothers' home, Brian Cloutier smoked a cigarette." We'll get back to normal," he said. "Cambridge and Boston are resilient."
A private funeral was scheduled Monday for Krystle Campbell, a 29-year-old restaurant worker killed in the blasts. A memorial service will be held that night at Boston University for 23-year-old Lu Lingzi, a graduate student from China.
City churches on Sunday paused to mourn the dead as the city's police commissioner said the two suspects had such a large cache of weapons that they were probably planning other attacks.
After the two brothers engaged in a gun battle with police early Friday, authorities found many unexploded homemade bombs at the scene, along with more than 250 rounds of ammunition.
Police Commissioner Ed Davis said the stockpile was "as dangerous as it gets in urban policing."
"We have reason to believe, based upon the evidence that was found at that scene - the explosions, the explosive ordnance that was unexploded and the firepower that they had - that they were going to attack other individuals. That's my belief at this point." Davis told CBS's "Face the Nation."
On "Fox News Sunday," he said authorities cannot be positive there are not more explosives somewhere that have not been found. But the people of Boston are safe, he insisted.
Dzhokhar Tsarnaev and his 26-year-old brother, Tamerlan, the suspects in the twin bombings, are ethnic Chechens from southern Russia. The motive for the bombings remained unclear.
Sen. Dan Coats of Indiana, a member of the Senate Intelligence Committee, said the surviving brother's throat wound raised questions about when he will be able to talk again, if ever.
The wound "doesn't mean he can't communicate, but right now I think he's in a condition where we can't get any information from him at all," Coats told ABC's "This Week."
It was not clear whether Tsarnaev was shot by police or inflicted the wound himself.
In the final standoff with police, shots were fired from the boat, but investigators have not determined where the gunfire was aimed, Davis said.
In an interview with The Associated Press, the parents of Tamerlan Tsarnaev insisted Sunday that he came to Dagestan and Chechnya last year to visit relatives and had nothing to do with the militants operating in the volatile part of Russia. His father said he slept much of the time.
A lawyer for Tamerlan Tsarnaev's wife told the AP Sunday night that federal authorities have asked to speak with her, and that he is discussing with them how to proceed.
Attorney Amato DeLuca said Katherine Russell Tsarnaev did not suspect her husband of anything, and that there was no reason for her to have suspected him. He said she had been working 70 to 80 hours, seven days a week, as a home health care aide. While she was at work, her husband cared for their toddler daughter, he said.
The younger Tsarnaev could be charged any day. The most serious charge available to federal prosecutors would be the use of a weapon of mass destruction to kill people, which carries a possible death sentence. Massachusetts does not have the death penalty.
Across the rattled streets of Boston, churches opened their doors to remember the dead and ease the grief of the living.
At the Cathedral of the Holy Cross in South Boston, photographs of the three people killed in the attack and a Massachusetts Institute of Technology police officer slain Thursday were displayed on the altar, each face illuminated by a glowing white pillar candle.
"I hope we can all heal and move forward," said Kelly McKernan, who was crying as she left the service. "And obviously, the Mass today was a first step for us in that direction."
Boston's historic Trinity Church could not host services Sunday because it was within the crime scene, but the congregation was invited to worship at the Temple Israel synagogue instead. The FBI allowed church officials a half-hour Saturday to go inside to gather the priests' robes, the wine and bread for Sunday's service.
Trinity's Rev. Samuel T. Lloyd III offered a prayer for those who were slain "and for those who must rebuild their lives without the legs that they ran and walked on last week."
"So where is God when the terrorists do their work?" Lloyd asked. "God is there, holding us and sustaining us. God is in the pain the victims are suffering, and the healing that will go on. God is with us as we try still to build a just world, a world where there will not be terrorists doing their terrible damage."
The federal Bureau of Alcohol, Tobacco, Firearms and Explosives was tracing the suspects' weapons to try to determine how they were obtained.
Neither of the brothers had permission to carry a gun. Cambridge Police Commissioner Robert Haas said it was unclear whether either of them ever applied for a gun permit, and the applications are not considered public records.
But the younger brother would have been denied a permit based on his age alone. Only people 21 or older are allowed gun licenses in Massachusetts.
Meanwhile, surgeons at a Cambridge hospital said the Boston transit police officer wounded in a shootout with the suspects had lost nearly all his blood, and his heart had stopped from a single gunshot wound that severed three major blood vessels in his right thigh.
Richard Donohue, 33, was in critical but stable condition. He is sedated and on a breathing machine but opened his eyes, moved his hands and feet and squeezed his wife's hand Sunday.