The remaining suspect in the Boston Marathon Bombing and MIT police officer shooting remains at-large after a daylong manhunt.

Col. Timothy Alben, of the Massachusetts State Police, says they have no indication Dzhokhar Tsarnaev (JOH'-kahr tsahr-NY'-ev) has a vehicle.

State police say they believe the bombing suspect is still in Massachusetts because of his ties.

Massachusetts Gov. Deval (deh-VAL') Patrick says mass transit service is resuming in Boston even though Tsarnaev is still on the lam.

Spencer Platt, Getty Images

Authorities in Boston had suspended all mass transit and warned close to 1 million people in the entire city and some of its suburbs to stay indoors. The other suspect, his brother, died in a desperate getaway attempt.

The Tsarnaev brothers are suspects in Monday's marathon bombings, which killed three people and wounded more than 180 others. The men are also suspected of killing a Massachusetts Institute of Technology police officer in his vehicle late Thursday.

Information from the Associated Press used in this report

UPDATE: 6:05p

Just after 7:00pm ET, ABC News and other media outlets have reported 'shots fired' in Watertown a number of police vehicle were seen racing into the Boston suburb.