Pediatrician found slain in Harlem park had recently kindled relationship with long-lost half-brother (EXCLUSIVE)

A pediatrician found stabbed to death in a Manhattan park had just connected with a long lost half-brother across the country.

A passerby spotted the body of Bruce M. Henry inside Marcus Garvey Park in Harlem around 2:15 a.m. Friday, police said.

Henry was killed a day before his 61st birthday, his shocked half-brother told the Daily News in an exclusive interview. He had been stabbed multiple times and his throat was slashed.

“I’ve been trying to get to him [on the phone] for his birthday yesterday and I haven’t gotten to him,” said the half-brother, who asked not to be named. “We just met this year.”

The siblings, who shared a father, never knew the other existed before Henry ordered a DNA test on Ancestry.com earlier this year.

“He reached out to my husband’s daughter,” said Henry’s sister-in-law. “He reached out to her and she told her dad about it.”

Henry met his half-brother’s family for the first time over the summer.

“He was a really nice person,” the half-brother’s wife said. “We got on well. He was funny.”

Henry’s nephew in Minnesota looked forward to meeting his uncle but will now never have the chance.

“Next time we were going to get the whole family together,” the nephew said. “Just wow. Oh my god.”

No weapons were found at the scene near Henry’s body, cops said, but the ground nearby was littered with condoms in a section of the troubled park linked in the past to drug sales and prostitution. No arrests have been made.

“We absolutely don’t know why this would happen,” Henry’s half-brother’s wife said.

There are no surveillance cameras in the park.

Henry got his degree in medicine from the State University of New York Upstate Medical University in 1987. He was licensed to practice in New York, New Jersey, Louisiana and Florida, records in all four states show.

He has practiced at hospitals in Nyack, Paterson, N.J., and New Orleans, records show.

Henry lived in the Spuyten Duyvil section of the Bronx.