LARGO — A 16-year-old girl arrived home Thursday afternoon to find the bodies of her parents, who died in what police are calling a murder-suicide.

About 2:30 p.m., she arrived at 13156 Thoroughbred Loop and discovered Rochelle Tatrai and Sean Ray, both 46, dead of apparent gunshot wounds, Largo police said. She went outside and flagged down a utility worker, who called 911.

Tatrai was the president and CEO of Gulf Coast Jewish Family and Community Services, recently in the news as it sought to expand a Pasco County shelter to accommodate young immigrant boys fleeing violence in South and Central America.

Detectives could not determine Thursday who was the shooter, and a motive was not released.

"This is a very unfortunate, sad incident that happened, especially this time of year," said Lt. Stephen Slaughter, "and we'll continue our investigation."

Police said Tatrai and Ray had been in a relationship, though it was unclear Thursday if they were married. They have another daughter, who is 20 years old. Ray did not live with Tatrai at the townhome just south of Ulmerton Road, where crime scene technicians removed several pets, including cats and a dog.

Family members could not be reached for comment Thursday night.

Tatrai began her career as a licensed mental health therapist and worked at Gulf Coast for 13 years, according to a prepared statement from the organization's board of directors. She served as chief operating officer for 11 years and was named president and CEO in May.

She was a hard worker, the statement said, with "dedication, grit and an uncommon love for the people served by her agency and the people she worked with on her GCJFCS team."

"This is an unthinkable time for our Gulf Coast family and we ask that Rochelle's daughters and family be kept in the prayers, hearts and minds of all who are in range of this story," the statement continued. "Her loss is unimaginable and it will be felt by our entire staff, our board of directors, our funders and anyone who knew her."

Times staff researcher John Martin contributed to this report. Contact Laura C. Morel at lmorel@tampabay.com or (727) 445-4157. Follow @lauracmorel.