“He stabbed him several times, just like he did Anna Lindh. Two of the blows hit the abdomen and damaged the liver,” a source revealed to newspaper Aftonbladet.

Mijailovic was sentenced to life in prison in December of 2004 for stabbing Lindh while she was shopping at the NK department store in central Stockholm.

While Lindh survived the initial attack, doctors were unable to stop the bleeding caused by the injuries and she died early the next morning.

Since the killing, Mijailovic has committed several violent crimes while in prison.

In 2005, he assaulted a fellow inmate at the forensic psychiatry clinic in Sundsvall in northern Sweden.

According to Aftonbladet, the latest incident occurred in December 2011.

Mijailovic suddenly attacked a 21-year-old fellow inmate with a screwdriver and stabbed him several times in the stomach and the chest. The incident occurred in a corridor in Kumla prison, where both were serving their sentences.

Mijailovic didn’t want to talk about the attack during the trial but according to Aftonbladet he confessed in interrogation:

“The motive of the stabbing is that X is bitching about me. I felt bad. He doesn’t have to say that I am sick. It is unnecessary. If I was sick I wouldn’t be in prison. Then they would have convicted me to psychiatric care,” he reportedly said.

Mijailovic also told officers that he had been looking for a knife but couldn’t find one.

“I took the screwdriver from the tool rack on the wall. It was a flat headed one, about 10 centimetres long,” Mijailovic said when questioned, according to the paper.

The victim sustained injuries from three stab wounds, including a damaged liver.

According to Aftonbladet, he said in questioning that he had tried to defend himself but had failed.

“Best thing would have been if he had died,” Mijailovic said, according to the paper.

Mijailovic was convicted of aggravated assault by the district court on Monday.

TT/Rebecca Martin