By MyFM's Rick Michaels - The Holliston Police Department is seeking the public’s assistance in locating a missing Holliston resident. 53-year old Robert Valli was last seen leaving his residence Saturday morning at around ten o’clock. Mr. Valli is described as a caucasian male with brown hair and brown eyes. He is approximately 5’9” tall and weighs approximately 285lbs. Mr. Valli should be operating a black Toyota Tacoma Pick-up Truck with Massachusetts license plate number O-266. His family states he’s been dealing with depression and recently was diagnosed with diabetes and they have not heard from him since last Friday. He also does not have his cell phone or wallet with him. The Holliston Police Department is asking anyone with information to give them a call 508-429-1212 regarding the possible whereabouts of Mr. Valli.