Police are investigating a stabbing death in an apartment building in the Bronx.

Officers were called to the Patterson Houses at 300 E. 143rd St. at about 3:10 p.m. Tuesday for an unconscious man inside an apartment, police said. There, officers discovered a 63-year-old man with a multiple stab wounds to his torso.

The victim has not been identified. Investigation is ongoing.

Get the latest from NBC 4 New York anytime, anywhere. Follow us on Twitter, Facebook and Google+. Sign up for email newsletters here. Get breaking news delivered right to your phone -- just text NYBREAKING to 639710. For more info, text HELP. To end, text STOP. Message and data rates may apply.