A JEALOUS boyfriend smeared his own blood over his partner’s house after smashing his way in through a window.

Dean Costello had gone to his girlfriend’s home in Alyssum Walk, Colchester, after drinking at a nearby pub, a court heard.

After he refused to leave, the police were called and ushered him away but Costello, 39, returned in the early hours and started smashing at a window.

His partner locked herself in a room with their one-year-old child and two of her friends who were at the house at the time.

Chelmsford Crown Court heard how once Costello got in, he proceeded to cause damage to the house and shout at the occupants.

Raj Joshi, prosecuting said: “The defendant managed to smash his way through a glass window.

"Having cut himself he went about the premises systematically leaving blood everywhere.

“A trail was left against the wall, against the stairs and the like.

“He then shouted threats to kill at the man in the property through the door.”

Police then took Costello to hospital and found he had cannabis on him.

He admitted a string of offences relating to the incident on November 29 including using violence to enter a premises, criminal damage, possession of cannabis, threats to kill and using threatening words.

Costello, of Honywood Close, Marks Tey, has 25 convictions for 59 previous offences, including causing death by careless driving while unfit through drink after a head-on crash in Tiptree in 2008 when his passenger - a 23-year-old man called Ben Stevens - was killed.

Gavin Burrell, mitigating, said Costello had erroneously thought his partner was cheating on him.

He said: “Since the crash where he killed his friend he has suffered from depression.

“He sometimes drinks to block out bad thoughts.

“He splits his time between his partner’s house and his home and he would regularly go to that address and stay there.

“That evening he went there and formed the wrong impression of what was happening.

“He was screaming and shouting trying to find out what was going on.”

Judge Patricia Lynch QC adjourned the sentencing for three weeks for a pre-sentence report to be prepared.

She said: “I am not satisfied I know enough about the situation to sentence you now.”

He was remanded in custody.