ARLINGTON, Texas—Gunfire outside a North Texas bar has left one man dead and three wounded as police investigate whether the shootings were linked to a dispute inside the club.

Arlington police on Monday continued the search for the gunman who fled after opening fire on a crowd in a parking lot.

A medical examiner identified the man who died Sunday as 24-year-old Ketron Nathan of Arlington. Investigators say three other men have injuries not believed to be life-threatening.

Arlington police early Sunday responded to reports of gunfire after an altercation inside the bar prompted workers to escort patrons to the parking lot. Witnesses reported seeing a man open fire, then fleeing.

Investigators are trying to determine what sparked the dispute and if the victims were targeted.