Saskatoon Police arrested four people after conducting a traffic stop Tuesday night just before midnight. Patrol officers pulled the vehicle over in the area of the 22 hundred block of 22nd Street West. Police allege, as the officers approached the vehicle, they saw open alcohol and a shotgun in plain view. Police also allege finding a can of bear spray and nearly seven grams of methamphetamine. The three men and a woman are facing weapon and drug charges in addition to a charge of Tampering with a Serial Number.