Lawyers for Boston Marathon bombing suspect Dzhokhar Tsarnaev have asked a judge to make prosecutors turn over family-related evidence as they try to build a case that his older brother was the “main instigator” of the deadly attack.

Two wives of a businessman convicted over the Mumbai terrorist attacks in India spoke to the FBI about their husband three years before, it has emerged.

Police in the US found an “amateurish” but potentially powerful bomb in a smoking sport utility vehicle in New York’s Times Square, then cleared the streets of thousands of tourists milling through the landmark district so they could dismantle it, authorities said today.