One-eyed police killer Dale Cregan today admitted the murders of a father and son.

Cregan, 29, had already admitted murdering two policewomen in Manchester last September when he changed his pleas in the second week of his trial at Preston Crown Court.

His trial continued as he maintained he had not gunned down Mark Short, 23, in a pub and that he had not killed David Short, 46, in a gun and grenade attack at his home.

Today, on the eve of his barrister's closing speech to the jury he changed his pleas to guilty.

He also admitted causing an explosion with a hand-grenade but denies attempting to murder the householder.

Cregan lured police constables Fiona Bone, 32, and Nicola Hughes, 23, with a bogus emergency call before killing them.

The murder of David Short last August was done using the same gun and the same type of grenade.

In May of last year, Cregan had gunned down Mark Short as he played pool in a pub.

Cregan also pleaded guilty to the attempted murders of John Collins, Ryan Pridding and Michael Belcher, who were all in the pub at the time of the incident on May 25, 2012.

He also admitted causing an explosion at a house shortly after the murder of David Short.

The judge then told the jurors that Cregan remained on trial for the attempted murder of Sharon Hark at her home.