Police in Montgomery County are seeking the public's assistance to find two teenaged brothers considered endangered runways.

The missing boys are Mark J. Seward, 15, and Chadd M. Seward, 14, of 709 Concord Way in Hatfield Twp. 

Chadd was last seen leaving his home at 6 p.m. Friday.  He was last seen wearing a light-colored pullover shirt and plaid shorts.

Mark left home sometime after 10 p.m. Sunday. He may be riding his BMX bicycle.

Both brothers have brown hair and brown eyes.

Chad is  5-feet 1-inch tall, weighs  120 pounds. He has a scar on the right side of his head.

Mark is 5-feet 2-inches tall and weighs 115 pounds.

Anyone with information about the boys should call township police at 215-855-0903.