NEW YORK - Police are investigating after a dispute turned deadly at a NYCHA complex in East Harlem early Monday morning.

It happened just before 1 a.m. on First Avenue near East 120th Street. 

Police discovered two men in a courtyard of the Wagner Houses. 

One was shot in the head and was pronounced dead at the scene. 

The other was taken to the hospital in critical condition.

No arrests have been made.

Anyone with information in regard to this incident is asked to call the NYPD's Crime Stoppers Hotline at 1-800-577-TIPS (8477) or for Spanish, 1-888-57-PISTA (74782). The public can also submit their tips by logging onto the CrimeStoppers website at or on Twitter @NYPDTips.