BOSTON (CBS) — Former Patriots and Boston College defensive lineman Ron Brace’s death has been determined to have come after an apparent heart attack, according to The Boston Globe.

Brace died over the weekend at age 29 in his home in Springfield, and no cause of death was initially reported.

According to the Globe, Brace “was watching television when he apparently went into cardiac arrest, the source said. Brace’s father, Ronald J. Brace Jr., discovered him, but emergency medical workers and doctors were unable to revive him.

A Springfield native, Brace played at Boston College from 2005-08 before getting drafted in the second round of the 2009 NFL Draft by the New England Patriots. Listed at 6-foot-3 and 329 pounds, he spent four seasons with New England, from 2009-12.

“It is difficult to believe that someone so young and in the prime of his life is no longer with us,” the Patriots said in a statement over the weekend. “Our thoughts and prayers go out to Ron’s family, friends and the many former teammates who will mourn Ron’s passing.”