The passengers said they wanted to go to 'Ewa Beach and gave the driver a $15 tip, police said.

But once they got to an area near the Campbell High School baseball field, one of them stabbed the driver with a folding knife in the right side of the chest. They then fled across the field, police said.

The driver is recovering from his injuries.

The man who stabbed the driver is described as in his late teens or early 20s, 5 feet 8, 150 pounds with a slim build. Police said he had dark-brown shoulder-length hair and a light-tan complexion, and wore a black T-shirt and dark-brown shorts. Police have designated him "Suspect 3."

The suspect who flagged down the taxi is 13 to 14 years old, 5 feet and skinny. He had blond or light-brown hair and was wearing a yellow floral aloha shirt. Police have designated him "Suspect 1."

Police said the man who gave the $15 is in his early 20s, 5 feet 4, 150 pounds, with short black hair and a dark complexion. He was wearing a black T-shirt and black denim jeans. He is "Suspect 2."

The fourth suspect is in his late teens or early 20s, 6 feet, with a medium build and tan complexion. He was wearing a dark beanie, black shirt and shorts, police said. He is "Suspect 4."