UPDATE: You can read a comment from former co-star Kirk Cameron here.

The family of Andrew Koenig, a former actor on the comedy Growing Pains, is asking for the public’s help. The 41-year-old has not been seen since February 14 in Vancouver, and his loved ones are growing increasingly concerned.

Koenig, who is best known for playing Mike Seaver’s friend Richard “Boner” Stabone, was due to board a flight back to the U.S. from Canada on February 16. Unfortunately, he never made that flight and hasn’t made any contact with those who know him.

His father, Star Trek‘s Walter Koenig (Pavel Chekov), says a letter he received on February 16 - the last day a text was sent to Andrew’s cell phone - has him worried his son may be despondent. “I think it’s something that has been a part of his makeup for a long time. There’s no single trauma. There’s no episode. There’s nothing of that nature,” Koening wrote on his website about the disappearance.

If you have any possible information about Andrew’s whereabouts, you are asked to call the Vancouver Police Department at 604-717-2534.