Four teenagers were involved in a shooting at an Oceanside, Calif., park Wednesday, according to police. Two of the teenagers were found with gunshot wounds and two were dead, investigators said.

The incident happened around 9 p.m. at Libby Lake Park in the city near the Camp Pendleton Marine Corps base.

Oceanside Police received multiple calls of shots fired at 8:50 p.m. They scoured the park and found one person shot and injured.

A couple of minutes later they found two other people shot and killed, then another person shot and injured in the same general area. At least of the two victims were shot more than once, officials said.

Witnesses said they saw several people running from the scene.

Officers are looking for two or more suspects, possibly in a gray or silver 2005 or 2006 Toyota Tacoma or Toyota Tundra extended-cab pickup.

Edgar Sanchez Rios, 16, and 13-year-old Melanie Virgen were found dead at the scene. The two wounded victims are also younger than 18 and were taken to Palomar Medical Center.

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Melanie was an 8th-grade student at Caesar Chavez Middle School and Edgar was a student at El Camino High School. Friends and family created a makeshift memorial at the park for the victims.

“The things that happen in this park startle me to death,” said Lt. Leonard Cosby of Oceanside Police Department. “It shouldn’t be happening.”

This shooting took place not far from a memorial in the park for a fatal shooting that occurred here just under two years ago.

The bodies of Fernando Felix Solano, 16, and Sandra Salgado, 14, were found May 3, 2011, in the northeast area of the park, which is located north of the San Luis Rey River.

The residential area is near several schools, including Libby Lake Elementary.

“I don’t want it to be a reflection on either the people in this park or the city of Oceanside, because it’s not that way,” Cosby said.

Cosby said his heart goes out to the community because he has worked a majority of his 26 years in the area.

The victim's friends are pleading for any new information of a suspect.

"If you know anything, please say something," said the victims' friend Efrain Almanaz. "We don't want more lives getting killed."