US

Testimony in marathon bomber's trial zeroes in on sister-in-law, what she knew before attacks

This undated photo provided by the Federal Public Defender Office and presented as evidence during the penalty phase in the trial of Dzhokhar Tsarnaev in Boston, shows his late brother Tamerlan Tsarnaev at an unknown location. Dzhokhar Tsarnaev was convicted of the Boston Marathon bombings that killed three and injured more than 260 spectators in April 2013. Tamerlan Tsarnaev died in a firefight with police four days after the bombings. (AP Photo/Federal Public Defender Office)

This undated photo provided by the Federal Public Defender Office and presented as evidence during the penalty phase in the trial of Dzhokhar Tsarnaev in Boston, shows his late brother Tamerlan Tsarnaev at an unknown location. Dzhokhar Tsarnaev was convicted of the Boston Marathon bombings that killed three and injured more than 260 spectators in April 2013. Tamerlan Tsarnaev died in a firefight with police four days after the bombings. (AP Photo/Federal Public Defender Office)  (The Associated Press)

Lawyers for Boston Marathon bomber Dzhokhar Tsarnaev (joh-HAHR' tsahr-NEYE'-ehv) revealed searches were done on his sister-in-law's computer on the rewards of dying as a martyr's spouse.

Tsarnaev's lawyers have branded his older brother, Tamerlan, a religious extremist who masterminded the 2013 bombings. They've urged the jury to spare Tsarnaev's life. Prosecutors want the death penalty.

A digital forensics consultant testified Tuesday that a computer belonging to Tamerlan's wife, Katherine Russell, contained searches done more than a year before the bombings for terms that included "rewards for wife of mujahedeen" and "If your husband becomes a shahid, what are the rewards for you?"

Mujahedeen is the Arabic word for holy warrior; shahid is a term for a martyr.

Russell's lawyer says she didn't suspect her husband of anything before the bombings.