Suspended Aam Aadmi Party (AAP) leader Tahir Hussain, accused in the killing of an Intelligence Bureau employee in northeast Delhi amid violence over the new citizenship law last week, is missing and efforts are on to arrest him, the police said on Tuesday. "He was named as accused... upon recovery of the body of Shri Ankit Sharma. His house was searched and he was found absconding. Efforts are being made to arrest him," the Delhi Police said in a statement late on Tuesday night.