The suspects allegedly also considered a suicide attack. (The National Guard, Creative Commons)

Tsarnaev and his brother Tamerlan, 26, who was killed in a shoot-out with police, allegedly also considered a suicide attack. However, they ultimately decided on using pressure cooker bombs.

The Times reports:

The brothers finished building the bombs in Tamerlan's apartment in Cambridge, Mass., faster than they had anticipated, and so decided to accelerate their attack to the Boston Marathon on April 15, Patriot's Day ... They picked the finish line of the marathon after driving around the Boston area looking for alternative sites, according to this account.

Authorities are still trying to determine what role Tamerlan's wife, Katherine Russell, might have played in the bombings.

Read the full story at the New York Times.

Reach Executive Producer Francesca Bessey here.