Eldest Boston bomber was thrown out of his mosque for ‘raged filled rant’ against Martin Luther King three months ago – as FBI hunts mysterious religious leader who ‘brainwashed’ him

Tamerlan Tsarnaev, one of the brothers accused of bombing the Boston Marathon, angrily disrupted a January talk at a Cambridge mosque when a speaker compared the Prophet Mohammed and the peace activist Martin Luther King Jr., the second time in recent months that Tsarnaev’s radical theology collided with mainstream Muslim faith at a public religious talk.

In the days since the suspects were identified last week, a picture has emerged of 26-year-old Tamerlan Tsarnaev — the elder of the two brothers, who was killed Friday in the battle with police — as an increasingly militant immigrant, whom family members described as unhappy and mean.

In disrupting the talk in January at the Islamic Society of Boston mosque in Cambridge, Tamerlan Tsarnaev’s shouted at a speaker: “You are a Kafir” – a nonbeliever, according to Yusufi Vali, a spokesman for the mosque. Tsarnaev went on to say the speaker was contaminating people’s minds, and accused him of being a hypocrite. The congregation disagreed, according to Vali, and “shouted him out of the mosque” on Prospect Street in Cambridge, MA.

A member of the congregation, also conveyed that, Tamerlan Tsarnaev was thrown out of his local mosque for ‘crazy’ behavior after getting involved a ‘shouting match’ with his imam.

Tsarnaev also interrupted a talk last November when a speaker said it was fine for people to celebrate holidays such as Thanksgiving and July 4, in the same way you celebrate the birthday of the Prophet. Tsarnaev challenged him and the two talked after service. “The brother was angry, but he left,’’ Vali said.

Tamerlan Tsarnaev was not a member of a local mosque, but began attending infrequently about a year ago, Vali said. His brother also attended.

This revelation comes as Ruslan Tsarni, an uncle of Tamerlan, claimed that his nephew had fallen under the spell of a mysterious religious leader in Cambridge, Massachusetts, who radicalized him and his brother Dzhokhar into committing Monday’s terror outrage.