A San Juan man is in critical condition after he was shot while driving his vehicle and police are needing the public's help in finding the shooter. Police suspect Arnulfo Silguero is that shooter after the victim reported he was being followed by Silguero on the 600 block of Sergeant Leonel Trevino road. As the vehicle, following the victim, got closer the victim noticed it was his brother-in-law and that's when shots were fired at the victim. The victim was wounded, lost control of this vehicle and came to a stop in an open field. The victim was transported to a local hospital and police are asking for anyone with information on the whereabouts of Silguero to contact San Juan police.