Boston Marathon

Thousands of mourners -- including MIT students, faculty and staff, and law enforcement officials from across the nation -- have paid their respects to a campus police officer who authorities say was ambushed in his cruiser by the Boston Marathon bombers.

U.S. officials say the Boston Marathon explosions that killed three people and wounded more than 260 were triggered by a remote-controlled detonator.

Neil Diamond is donating some of this week's sales from "Sweet Caroline" after the tune became a source of comfort following the explosions at the Boston Marathon.

Two U.S. officials say the surviving suspect in the Boston bombings acknowledged his role in the attacks to FBI investigators. But the officials say this occurred before authorities advised him of his constitutional rights, including the right to consult with an attorney and not to incriminate himself.

The suspect in the Boston Marathon bombings killed in a shootout with police received welfare benefits from the state up until last year, when he became ineligible based on family income.

Under current law, someone can purchase as much as 50 pounds of explosive "black powder" without a background check, as well as an unlimited amount of "smokeless powder" and "black powder substitute."

The Boston Marathon bombing suspects visited a New Hampshire fireworks store in February looking for the "biggest, loudest stuff" in the store.

Vice President Joe Biden says the Boston Marathon bombing proved that acts of terror cannot weaken the U.S.

Family members of the suspect in the Boston Marathon bombings who died in a shootout with authorities say that the suspect, Tamerlan Tsarnaev, had fallen under the influence of a Muslim convert who steered the religiously apathetic young man toward a strict strain of Islam.

Funerals have been held today for the youngest of the Boston Marathon bomb victims, and for the college police officer who authorities say was shot and killed by the suspects a few days later.