Authorities in Worcester, Massachusetts, said officers searched the area around Midtown Mall after a man tried to rob a woman at gunpoint.
Worcester police say the suspect fled the area before officers arrived at the scene.
No gun was found, and no one was injured.
Police said the victim was also uncooperative with officers.
The incident caused the mall to temporarily close, and Mechanic Street was blocked as police canvassed the area, according to the Telegram & Gazette.
A tracking dog from Millbury is also assisting police in their search, the newspaper reported.