Ex-girlfriend of 15yo shot dead while sleeping received disgusting texts after the attack.

Brayden Dillon, 15, died this morning after being shot in the head while lying in bed at his southwest Sydney home.

It’s believed the attack was targeted and there are reports it was a ‘revenge’ killing.

The teenager’s family was asleep when at about 6am on Friday a man kicked in the door of their Glenfield home and shot the boy, Detective Chief Inspector Mark Brett told reporters in Sydney.

He died at The Children’s Hospital in Westmead five hours later.

Police believe the shooting may be a revenge attack connected to another homicide, according to multiple media reports.

The Daily Mail reports Dillon’s ex-girlfriend received chilling Facebook messages following the murder, saying Dillon “should have seen it coming”.

‘It’s called revenge,” one message allegedly sent to the teenage girl read.

“He deserved everything his just got. Hahahahh. He’s gone now. Can’t bring back the dead hahah [sic],” another string of messages said.

“We all knew this was going to happen,” the messages continued. “Maybe you didn’t but I did and I know who shot him as well. Been planned for six months.”

Det Chief Insp Brett would not comment on “any of those speculations”, but told reporters the boy was known to police.

Dillon’s mother, stepfather and two young siblings, reportedly aged one and seven, were not injured in the attack, but police say his mother was “extremely distressed”.

Friends of the teenager paid tribute on social media, with one post on Facebook saying “RIP BROTHER, Still can’t believe your gone.. but you will all ways be missed and loved my brother.”

“I didn’t see this coming at all and wish it never did you will forever and allways [sic] be my bubby,” another post said.

Police are still hunting for the attacker, whose identity is unknown, Dep Chief Insp Brett said.

He may still be armed and is described as being 18 to 20 years old with a thin build. According to police, he was last seen wearing grey tracksuit pants, a navy blue hooded jacket and white joggers.