MONTGOMERY COUNTY, Md. (DC News Now) -- Montgomery County police said detectives are investigating after a man stabbed a 77-year-old at the entrance of the Montgomery College Cultural Arts Center in August. According to police, on Aug. 29 at around 2:20 a.m., an unknown man got into an argument with a 77-year-old man over property. The argument escalated, and the suspect pulled out a knife, stabbing the man in the forehead before fleeing the scene. Mom charged with attempted murder after allegedly shooting 13-year-old daughter Responders took the man to an area hospital with serious injuries. Detectives reviewed surveillance footage and are searching for the suspect. Police encourage anyone with information regarding the suspect or the crime to visit the Crime Solvers of Montgomery County, Maryland, website and click the www.p3tips.com link at the top of the page or call 1-866-411-8477.