Police said they responded to reports of a man being held against his will by an unknown group at Ipswich, west of Brisbane, after 10pm on November 6.

A 26-year-old injured man was located at a Brassall address and taken to hospital for treatment.

Police launched an investigation after the man claimed three people threatened him with weapons and forced him into a car, driving him around the Ipswich area while demanding money.

Two men were arrested after police executed search warrants at Redbank Plains and Brassall properties about two weeks later.

The two 18-year-olds were charged with offences including kidnapping, extortion and assaults occasioning bodily harm.

Both have been remanded in custody and are set to appear at Ipswich Magistrates Court of December 15.

A 17-year-old was also arrested after police searched a Crestmead property last week.

He has been charged with kidnapping, extortion, assaults occasioning bodily harm, possessing dangerous drugs and receiving tainted property.

He was remanded in custody and is set to appear in Ipswich Childrens Court on January 16.