MISSING TEENS: Have You Seen Jacob and Shawn Walker?

Local police and the National Center for Missing and Exploited Children are asking for the public’s help to find Jacob and Shawn Walker, two Billerica brothers who have been missing since Oct. 21.

Jacob (16) and Shawn (14) are missing from Billerica. Officials say they believe they may still be in Billerica or travel to Lowell.

• Jacob is described as a white male with brown hair and brown eyes. He’s 5 feet, 6 inches tall and weighs 150 lb.

• Shawn is described as a white male with light brown hair, brown eyes. He’s 5 feet, 6 inches tall and weighs 135 lb.

If you’ve either Jacob or Shawn or have any information on their whereabouts, you are asked to call Billerica Police at 978-667-1212 or Lowell Police at 978-937-3200.