ST. PETERSBURG, Fla. — The founder of Partridge Animal Hospital in St. Petersburg and his wife have been identified as the victims in a North Carolina plane crash.

Dr. Harvey Partridge and Patricia Partridge, both 72 and of Terra Ceia, were on board a plane that crashed Sunday night in Umstead State Park.

The plane was found Monday morning. The park is located not far from Raleigh-Durham International Airport.

"Our condolences go out to the family and friends of the Partridges," said Michael Landguth, president and CEO of the Raleigh-Durham Airport Authority.

The victims were on a Piper PA-32. It was lost on radar shortly before 7:30 p.m. Sunday.

According to the Partridge Animal Hospital website, Dr. Harvey Partridge opened it in 1978.

The hospital is located at 6400 4th Street North in St. Petersburg.

The cause of the plane crash is still under investigation.