TWO men who went out searching for their stolen motorcycle have received a string of charges after their hunt allegedly turned violent.

Police say the men went looking for the off road motorcycle in the pine plantation in Ellenbrook about 12pm on Saturday after spotting it being ridden.

It's alleged when they arrived they approached a group of men and a fight broke out. The men allegedly assaulted a 15-year-old several times and threatened him with a weapon before forcing him to get into their car.

During the journey the motorcycle was seen again but the rider rode off back into the plantation.

Police say the teenager was allegedly driven to an address in Ellenbrook, where the two men threatened the occupants demanding the motorcycle be returned.

The teen managed to escape the car and ran into the house. He escaped with bruising and minor cuts to his face.

The men then left and police were called.

The pair, a 40-year-old and 17-year-old from Ellenbrook, were charged with deprivation of liberty, assault occasioning bodily harm and threatening to kill.

The 40-year-old he will appear in the Midland Magistrates Court on August 18, while the 17-year-old will appear in the Midland Children’s Court on August 9.

Midland Detectives are investigating.

Detectives are seeking anyone with information to contact Crime Stoppers on 1800 333 000 or to make a report online at www.crimestopperswa.com.au