The older sister of alleged serial killer has admitted that she felt “sick” with worry when he confessed he had a dead body in his bedroom.

Mr Port, 41, is on trial at the Old Bailey accused with murdering four young men with lethal doses of date rape drug GHB after luring them to his flat in Cooke Street, Barking.

His sister, Sharon Port, 44, today gave evidence for the prosecution about what he told her in August 2014, around the time of the death of Slovakian Gabriel Kovari, Port’s alleged second murder victim.

During a telephone call on August 27 2014 he told her there was a dead man in his bed and he could not wake him up.

She said: “I just asked him to tell me why he was stressed and what was wrong. He did not want to tell me at first.

“He just said there was a body in his flat and I just told him to go to the police straight away. I was in a bit of a shock.”

Miss Port said her brother told her that the man had stayed the night with him and when he woke up he wasn’t moving.

She told jurors: “I was sick about it. It’s not the sort of thing you hear every day. I was very worried. I wanted him to drop everything and go to the station then ring me when he got out and tell me what happened.”

She was so concerned that she drove with her boyfriend to Barking and when she was en route, Port called to say he had been bailed by police, the court heard.

Dogwalker Barbara Denham, who found the bodies of Mr Kovari and Anthony Walgate in Abbey Green within the space of two months, broke down as she described her shock.

“I seen him there and thought it cannot be the same thing again, in exactly the same place, lying in exactly the same position,” she recalled. “I was so sad to find out - yes it was.”

Mr Port denies 29 offences against a total of 12 men - including four murders, seven rapes, four sex assaults and administering a substance with intent.

The trial continues.