A veteran NYPD detective has been suspended without pay after a tied-up kidnap victim was found in his Queens garage, sources told The Post.

Ondre Johnson, a 17-year veteran of the Brooklyn north gang unit, was being questioned along with his cousin and another man suspected of being involved in the incident, and was forced to surrender his gun and badge pending the outcome of the investigation.

The 25-year-old victim was snatched off the street early yesterday morning, taken to the detective’s home and held for $75,000 ransom, sources said.

Cops busted four in the scheme.

Hakeem Clark, 30, who lives in the same building as Johnson, was slapped with kidnapping and weapons charges along with Jason Hutson, 27, and James Gayle, 27.

Alfredo Haughton, 24, was charged with kidnapping.

The sources said the kidnappers called a friend of the victim and demanded the huge cash sum. After several calls were made, the victim’s pal went to cops who were able to trace the location of the phone to the detective’s home.

Cops reached the detective’s home at about 3 p.m. yesterday. The detective answered the door with two handguns visible on his person, and identified himself as NYPD, sources said.

Officers found the victim bound in the garage, law-enforcement sources said.

The detective and his sidekicks were questioned last night at the 113th Precinct in Jamaica by Internal Affairs and Queens detectives, the sources said. No charges had been filed.