21.   Police say that there is no obvious motive for the attack.

22.   Police say the motive for the killing was an unpaid drug debt.

23.   Police were also seeking a motive for an attempted pipe bomb attack on a house in Ballymoney, Co Antrim.

24.   Robbery was believed to be the motive for the killing.

25.   Sexual jealousy is a common motive for murder.

26.   She felt suddenly sickened, reminded of her real motive for taking this job with Luke.

27.   She wondered if there was a hidden motive for his departure.

28.   So far the police have been unable to establish a motive for the murder.