Columbia police last week renewed a call for the public's help in locating a man who has been missing for nearly three years.

Kylan P. Stubler was 17 when he was last seen around 2 p.m. April 21, 2011. He reportedly was picked up by an unknown friend at a Columbia residence and has not been seen since, police Officer Latisha Stroer said in a news release.

Stroer said detectives have exhausted all leads. Stubler would now be 20 years old. He is described as 5 feet 10 inches tall and weighing 150 pounds.

"Detectives wanted to go out again to try to put it out there in case anybody's heard from him or seen him," Stroer said in an interview yesterday, "kind of jog people's memories and to let them know we're still investigating this."

Stubler's family is still offering a $10,000 reward for information about his whereabouts, family spokeswoman Wendy Swetz said. "We've just all been waiting to hear something from police," she said, "hoping every day that there is some kind of break in the case."

Police are asking anyone with information to call the non-emergency line at 573-442-6131 or CrimeStoppers at 573-875-8477.