Two men are in custody after an Edmonton student who posted his car for sale online was kidnapped, forced into his car and driven to Calgary.

Police say the 23-year-old man arranged to meet two prospective buyers in a parking lot around 6 p.m Sunday.

The man says he was forced into his car, threatened and driven to Calgary where his abductors picked up a third man.

The man was then shoved into the trunk of his vehicle at knifepoint. Somehow he was able to escape from the moving car and call police.

The alleged abductors were later stopped in Red Deer by a spike belt that was laid down by RCMP.

"Needless to say it was a harrowing experience for a young man that had no previous knowledge of what was about to take place," said Edmonton Police spokesman Scott Pattison.

"When police were interviewing him, he was pretty shaken up."

The man had arranged to have his father accompany him to the sale but ended up having to go alone. The location was also changed at the last minute, which Pattison says should be a red flag for anyone selling items online.

The two accused face charges including kidnapping, robbery, uttering threats, weapons offences and breach of recognizance. A third man remains at large.

Earlier this year, Hamilton, Ont. man Tim Bosma disappeared after he took two men for a test ride in a truck he had listed for sale online.

The burned remains of the 32-year-old were later found on a farm. Two men are charged in connection with his death.