The three people found dead in a car Sunday night in Palm Springs were all teenagers who suffered gunshot wounds, police said Tuesday.

They were described as two males and one female between the ages of 17 and 19, Palm Springs Police Chief Bryan Reyes said at a news conference. Their names and cities of residence haven't been released, and police are still investigating if their deaths are linked to a homicide reported about 30 minutes later about a half-mile away.

Police are still investigating the teenagers' exact causes of death.

Reyes said a person of interest is in custody on unrelated accusations, but wouldn't give details on his connection, if any, to the four deaths since he hadn't been arrested.

“We do not know if there is more than one person involved in this case,” Reyes said, adding that residents should remain alert and notify investigators if they have any information, including surveillance footage that may assist in the investigation.

Reyes wouldn't say each teen's age or who was driving the vehicle at the time of the collision. He also wouldn't elaborate on the person of interest's unrelated accusations or whether a weapon was recovered at the scene

Update:Familes identify the three teens found dead in Palm Springs homicide investigation

The collision, which involved a Toyota Corolla, was reported about 11:40 p.m. Sunday on Sunny Dunes Road at El Placer. Police were notified about 12:15 a.m. Monday that a body was in the middle of the road near Theresa and Canon drives. Both sites are in a neighborhood directly south of Ramon Road and separated by about a half-mile.

The homicide at Theresa and Canon involved a 25-year-old man, according to the Riverside County Coroner's office. Police said he had a gunshot wound and they believe he was a resident of Palm Springs.

The teenagers were in the Corolla, which crashed into a parked Jeep before striking a wall outside a home.

More:Four dead in Palm Springs homicide and collision a half-mile apart

More:Coroner identifies 26-year-old Patricia Cesena as La Quinta woman found dead in homicide case

More:Hiker dies after fall down ice chute in San Bernardino National Forest

The parked vehicle was described by its owner as a 2002 Jeep Sahara. The Palm Springs man, who wouldn't give his name, said his daughter arrived home and parked along the south side of Sunny Dunes about 10 minutes before the collision.

He ran outside, where he found another neighbor attempting to help the three occupants. He said the neighbor waved him off because "they weren't responding. There was nothing we could do."

Blood was visible on the Corolla's windshield and airbag. The car also knocked over a street sign and covered a sidewalk in skidmarks before crashing into a wall outside a home on the south side of Sunny Dunes.

A woman declined to comment to reporters as she left the home Monday morning.

Sunny Dunes was closed between Mountain View Drive and Avenida Evelita during the investigation and it didn't reopen until 11:30 a.m. Monday.

If you have any details you'd like to share with us regarding the Palm Springs homicides, email us at local@desertsun.com.

Desert Sun reporter Colin Atagi covers crime, public safety, and road and highway safety. He can be reached at Colin.Atagi@desertsun.com or follow him at @tdscolinatagi