Boston police investigate ‘inconsistent behavior’ in case of Boston Marathon bombing

Police in Boston are investigating a possible bias-motivated crime in the case of a Boston Marathon bomber who authorities say threw a Molotov cocktail and then barricaded himself in a building on Sunday.

Boston police said Sunday that the bomber, Sayfullo Habibullaevic Saipov, barricaded inside a building near the finish line of the race Sunday and left a note threatening to detonate explosives if he was unsuccessful in his mission.

The police commissioner said Saipivic, 27, was arrested at a nearby apartment building and that the investigation is continuing.

Saipvist said Sunday he was the target of a “militarized attack” by a “group of terrorists” who have been “playing the game” for months.

He said the group is targeting a U.S. government office and “a number of other people.”

Police have arrested two other suspects, but have not released any details.

Authorities are also searching for a second suspect, who was believed to be at the apartment building.

Saapov had a criminal history that included domestic violence charges and was convicted in 2012 of aggravated assault and attempted murder in Massachusetts.

Authorities have been investigating the bombings and the Boston Marathon bombings as potential acts of terrorism, but it’s not clear whether Saipavic’s arrest is connected to those cases.

Saapsiov had been living in Boston for months, police said, but authorities said Sunday the two were living in different buildings.

Saipsiov is believed to have gone into hiding after the bombings, but he did not have a “person of interest” description, according to police.

Boston Mayor Marty Walsh said Saipsiv was in his apartment for nearly two hours before authorities made the arrest.

He praised police for doing “everything they could” to prevent a violent act from taking place, but said he’s disappointed that Saipvi was apprehended so quickly.

“It’s an unfortunate situation and we’re very concerned about the safety of the community,” Walsh said.

The Associated Press contributed to this report.