#YG had a run-in with cops Thursday morning during a SWAT response ... but he was ultimately released ... TMZ has learned. The Burbank Police Department tells TMZ ... the SWAT team responded around 7 AM PT. YG was detained during the police response before officers eventually let him go. Sources tell TMZ ... CHP was the lead agency on the matter and Burbank SWAT assisted. We’re told cops were executing a search warrant for the investigation into #DrakeotheRuler’s murder - the property is connected to YG, who had beef with the late rapper but has denied any involvement. A CHP official tells TMZ ... YG was not arrested ... he was detained during the search warrant and released. The timing is especially wild ... YG is scheduled to take the stage Thursday night against fellow Compton heavyweight The Game in their “Compton Forever” VERZUZ battle. The hit-for-hit West Coast showdown is slated to begin at 6:30 PM PT ... meaning YG’s morning included some unexpected face time with Burban...