Things have changed dramatically since yesterday's press conference at 5pm. Most importantly we now know the identities of the two suspects, (white cap) Dzhokhar A. Tsarnaev, 19, and (black cap) Tamerlan Tsarnaev, 26, who turn out to be brothers.
This is an on-going, evolving story. Here's a rough timeline of how this all transpired ...
At 5pm yesterday, law enforcement held a press conference releasing photographs and video of two people they were searching for in the Boston bombings. They were identified by their white and black baseball caps, and they were asking for the public's help in identifying the suspects.
Around 10pm last night, two men robbed a 7-11 convenience store in Cambridge near the MIT campus.
At about 10:20pm police found an MIT police officer shot multiple times in his vehicle. That officer sadly died later of his injuries at Massachusetts General Hospital. His name was Sean Collier, 26, of Somerville. Our hearts go out to his family.
Shortly after, the suspects carjacked a Mercedes SUV in Cambridge at gunpoint. The man in the vehicle is held for about half an hour and then released at a gas station in Cambridge. He was unharmed, but some reports say that the man says the carjackers bragged that they were the Boston bombers.
Around 1am this morning, police locate the stolen Mercedes SUV in the town of Watertown, Massachusetts. A chase ensues through a residential neighborhood when some sort of explosive devices are thrown from the car. Gunfire is then exchanged with police, where a transit police officer is seriously injured. One suspect, the older brother in the black cap, is critically injured and later pronounced dead. He appeared to have shrapnel in his body, leading some to believe he had some sort of explosive device, other reports say that he had an explosive trigger on him. The younger brother, Dzhokhar Tsarnaev, escapes.
Around 4am, police confirm that the events that night/morning were in fact the doings of the Boston marathon terrorists. As a result, throughout the wee hours of the morning, police began going door-to-door throughout Watertown and surrounding areas looking for the second suspect, the younger brother in the white cap. Public transit service was suspended.
After 6am we learned the names and the relationship of these two terrorists: Brothers. The older brother (the man in the black cap in the original FBI photos) was identified as Tamerlan Tsarnaev, 26 years old. He has died. The younger brother in the white cap was identified as Dzhokhar Tsarnaev, 19 years old, remained on the loose.
About 10am it is confirmed that Dzhokhar Tsarnaev, the 19-year-old suspect, was a registered student at the University of Massachusetts-Dartmouth, which went into lockdown and evacuated the dorm in which he was said to have lived.
Around 11:30am an uncle of these terrorists, Ruslan Tsarni, gave an emotional interview telling Dzhokhar to "turn yourself in and ask for forgiveness … ask for forgiveness from these people." He said he brought shame to the family and shame on the entire Chechnyan ethnicity.
Throughout today there have been several instances where gun fire or explosions have been heard.
Here are some stories related to the events from last night and what we are coming to learn of these terrorists:
(Unconfirmed) YouTube account that belongs to a person named Tamerlan Tsarnaev had bookmarked videos on terrorism (Washington Post)