A local man got more than he bargained for when he tried to make a citizen's arrest last night on East Empire Street. The 22 year old chased two people after he saw them break into his truck. He caught up to one of them--a teenage girl--but quickly backed off when her male accomplice pulled out a knife. The two suspects then ran into a laneway. The K-9 unit was called into to track the pair; no arrests have been made. Thunder Bay Police say making a citizens arrest can be risky and that it's often better to call 911 and just keep an eye on the suspects.