Updated

A man sentenced to a life term in Delaware is at large after his escape at Philadelphia International Airport.

The Delaware Department of Correction says 43-year-old Tarriq Ali, also known as Wendell Husser, was being transported from California back to Delaware by a private prisoner transportation service when he escaped.

The department says the escape happened about midnight Friday but department officials weren't informed until Sunday.

A company called Prisoner Transport Services of America had been hired by the state to return Ali to Delaware.

Ali was convicted of attempted murder in Delaware in 1995, but was sent to California under a prisoner exchange agreement.

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