NFL legend Junior Seau was found dead in his home in Oceanside, CA … and a law enforcement source at the scene tells us cops believe he shot himself.
Seau was 43-years-old … and leaves behind 4 kids and an ex-wife.
Cops are currently at Seau’s home — located in San Diego County — and were seen talking with a man who was inside the house and appeared distraught.
Seau was a beast in the NFL — skyrocketing to fame thanks to his explosive play with the San Diego Chargers, Miami Dolphins and New England Patriots. The USC standout was selected in the first round of the NFL draft in 1990 and played in the league for 20 years.