A second man now charged in a deadly 2012 London shooting — a cold case until a few weeks ago — has a past conviction for robbing sex-trade workers at knifepoint.

Thomas Lako, 25, is charged with manslaughter in the slaying of Jonathan Zak, 29, whose body was found in a park near Boullee and Victoria streets on May 31, 2012.

The charges against Lako, announced Wednesday, come less than three weeks after police charged William McDonald, 26, with second-degree murder in the five-year-old homicide.

Zak was walking through Northeast Park at 1:30 a.m. after a night of playing video games at a friend’s house.

Investigators say there were several people in the east-end park — an area known for drug and gang activity — and Zak became the target of a robbery.

“It is an ongoing investigation and if any member of the public has additional information they can call us,” said police spokesperson Const. Sandasha Bough.

Bough declined to reveal what was stolen or whether Lako is affiliated with a London street gang.

Both Lako, who was already in custody on unrelated charges, and McDonald are expected to be jointly charged with robbing Zak, police said Wednesday.

Lako has a past conviction for a string of violent robberies.

In 2014, he pleaded guilty to four counts of armed robbery and drew a three-year prison term.

The court in that case heard how Lako, then age 23, and Amar Youssef, 20 at the time, targeted local sex-trade workers they knew would carry lots of cash and be unlikely to report a robbery to police.

The pair answered online ads on backpage.com and arranged to meet the sex-trade workers at a London address, where they’d rob the women, sometimes violently or with Lako holding a knife to their necks.

McDonald, the other man accused in Zak’s death, had been sought by police last spring following an April 29, 2016, shooting in a parking lot off Richmond Row that critically injured a 23-year-old man, who has since recovered.

While on the lam, McDonald was accused of gunning down Emmanuel Awai, 26, inside his Connaught Avenue apartment in London on Dec. 28, 2016.

McDonald, who was arrested at a London motel on Feb. 15, was charged with second-degree murder in the death of Awai, a man he’d known since childhood when the two grew up in the city’s east end.

He’s also facing charges in the April 2016 shooting off Richmond Row.

Less than a year after ZaK’s death, police offered a $25,000 reward in the case.

“At this time, no reward has been paid out,” Bough said.

Jonathan Zak homicide chronology:

May 31, 2012: Zak, 29, shot to death while walking through Northeast Park.

Feb. 12, 2013: London police offer $25,000 reward in the case.

May 26, 2017: William McDonald, 26, charged with second-degree murder.

June 14, 2017: Thomas Loko, 25, charged with manslaughter. Both Loko and McDonald also expected to be charged with robbery.

dcarruthers@postmedia.com

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