Charles Smith (CAS ’89), a member of the Georgetown men’s basketball team from 1985 to 1989, was shot twice in the chest inside his Bowie, Md. home Thursday afternoon.

He was hospitalized and is in critical-but-stable condition after undergoing surgery later in the day, NBC News4’s John Schriffen reported.

Prince George’s County police are searching for a lone gunman whom witnesses identified as a man wearing a red hat. Law enforcement sources said the shooting could have stemmed from a gambling debt.

Smith, a guard, was Big East player of the year and a second-team All-American his senior season, averaging 18.7 points and 5.1 assists for the Hoyas en route to a berth in the NCAA tournament where Georgetown lost to Duke in the East Regional final.

Smith went undrafted in 1989 but signed with the Boston Celtics, for whom he played until 1991. That March, after the Celtics’ fifth game of the season, Smith’s car struck and killed two Boston University students late at night on Commonwealth Avenue. He was convicted a year later on the charge of vehicular homicide and leaving the scene of a crime. Smith served two and a half years in prison.