More than 40 victims of serial killer confirmed

US investigators have so far confirmed that a 78-yearold drifter — who could potentially be the most prolific serial killer in American history — is responsible for more than 40 murders, authorities said on Thursday.

Samuel Little has confessed to 90 murders committed between 1970 and 2005, according to the FBI.

Bobby Bland — the district attorney in Ector County, Texas, where Little was being held on a murder charge — said at least six more of his confessions have been verified over the last two weeks. (AFP)