Police are investigating the death of 21-year-old man found in his Kensington home with a puncture wound in his chest.

Firefighters first responded to a medical call for someone who had stopped breathing at the house on the 2600 block about 7:45 a.m., officials said.

But after the man was pronounced dead at 8 a.m., a police crime scene unit was called to the address.

Police said that while the man had a puncture would to the chest, investigators are awaiting the results of an autopsy to establish the cause of death.