A murderer has left court in an ambulance after being convicted of the brutal killing of the woman who rejected a long-term relationship with him.

But rather than leaving in a prison truck, he was rushed out of court on a stretcher tended by paramedics.

Sultana stabbed himself in the left arm with a sharp implement after hearing Justice Peter Garling’s verdict in the King Street courthouse.

The 35-year-old was tended to by sheriff’s officers and court staff while an ambulance was called.

He sobbed loudly and had a bloodied left arm as he was wheeled out of court by paramedics.

The incident played out in front of Isaac’s family, including her father Garry English.

He told reporters outside court that Sultana’s guilty verdict was a good outcome for his “princess”.

Justice Garling found Issac’s murder followed a brief relationship between the two friends.

The relationship was “unsettled” and involved a jealous Sultana being unable to accept a relationship of the kind Isaac desired.

The trial heard evidence from Sultana’s mother, Janet Tsiliris, who was called by her son in the aftermath of the murder.

The killer later picked up his mother in Isaac’s car and took her to the victim’s apartment in the western Sydney suburb of Penrith, where the murder occurred.

He repeatedly told her “it’s bad”, Tsiliris’ police statement said.

“I walked in the front door and saw blood in the entry way near the lounge room on the floor,” Sultana’s mother told investigators.

After seeing Isaac with blood on her face, Tsiliris ran out of the unit yelling “I’m gone, I’m out of here.”

English gave evidence outlining conversations he had with Sultana, including one in which he said his daughter was not interested in pursuing a romantic relationship with her eventual killer.

“I said to him, ‘Paul, Dayna likes you as a friend and nothing more’,” English said in his statement.

“He got in my face and told me that I have to tell Dayna that he was good for her.”

Sultana argued an unknown third party killed Issac while he was sound asleep in her unit.

He is expected to face sentencing before the end of the year.

Support is available by calling 1800 RESPECT (1800 737 732), Lifeline on 13 11 14 or the Men’s Referral Service on 1300 766 491.