State police are asking the public’s help in finding a father and son from northern Butler County who turned up missing Monday night.

Ronald Brian, 30, and Grant Brian, 10, were last reportedly seen at 9:30 p.m. when they left their home in the 600 block of West Mercer Street Extension in Mercer Township.

The father and son were headed to Presbyterian Hospital in Pittsburgh, police said. But they never arrived.

The two were last seen driving in a silver, 2002 Pontiac Bonneville sedan with the Pennsylvania license plate HYG4643.

Anyone with information about their whereabouts is asked to call police at 724-284-8100.