Police are searching for a man from Sayreville who has been missing since Sunday.

Jonathan Misak, 29, has autism. His family says he is highly functional. He was last seen leaving his home at the Main Street Townhomes around 3:30 p.m. Sunday.

Neighbors say they are concerned about his disappearance.

“It’s a really big shock to the neighborhood…I really wish this could come to a conclusion really soon, for peace of mind of the family. Great person and we want to see him back safely,” says neighbor Michael Parse.

Police say that Misak was last seen wearing a blue Denver Bronco's shirt with a logo and lettering on the front and back. He had on blue jeans and gray sneakers, with no jacket. He is described to be 5 feet, 10 inches tall and weighs 210 pounds. His sister said he left home on foot without a wallet or phone.

Anyone with information about his disappearance is asked to call the Sayreville Police Department at 732-727-4444.