THE MUM of the Westminster terror attacker was worried he would kill someone in a fit of rage, a court heard today.

The inquest into last year's attack at the Houses of Parliament heard how Khalid Masood's own family were concerned for him - and that he was linked to a string of other violent incidents.

His mother had told police the perpetrator of the sick attack - which killed five people including brave PC Keith Palmer - that he was an angry person who would go looking for a fight.

And she said he often went out on booze-fuelled benders and she was worried he would kill someone in a fight.

As a kid he was also violent, his step brothers claimed.

Masood was shot dead by armed police minutes after he mowed down innocent pedestrians on Westminster Bridge last March.

The court were told by DCI Dan Brown, a counter terrorism officer, that he had been involved with a string of other violent attacks and run-ins with the law.

One victim was stabbed in the face so hard a knife broke off, and another had their collar bone fractured by him.

He was repeatedly arrested for criminal damage, possession of an offensive weapon, and threatening behaviour - and attacked cops too.

Masood's second wife cited his anger issues as part of the reason they separated.

While he was in prison he converted to Islam, he wrote on a dating website.

Yesterday the court heard that Westminster security system had failed brave PC Keith Palmer, who was killed by Masood at the entrance to Palace of Westminster.

Three armed guards had fixed posts at carriage gates in the past, but at the time of the attack they had been replaced with roving patrols.

"All the family want is to have an opportunity to put questions to see whether or not the failures in the system would have made a difference," Susannah Stevens, representing the family, said.

And earlier this week hero MP Tobias Ellwood told of how he closed PC Palmer's eyes and told him "I'm sorry" after he couldn't save his life.

The Tory MP held back tears as he recounted his efforts to save the brave cop.

The inquest is expected to last five to six weeks.