Police are looking for suspects after two overnight shootings and two stabbings left three men dead and one other injured.

Around 10:50 p.m. in Brownsville outside the Glenmore Houses near Pitkin and Christopher avenues, a 52-year-old was fatally shot several times in the back, the New York Daily News reported, adding that a gun was found at the scene. No arrests have been made.

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At 11:20 p.m., Gerary Woodley, 46, was shot in the head near the corner of West 139th Street and Malcolm X Boulevard in another incident still under investigation, the Daily News added. The victim was taken to Harlem Hospital where he died.

Earlier on Thursday at around 4:30 p.m., police responded to 120 Bellamy Loop in the Bronx where they found 83-year-old Reynold Dobson dead with multiple stab wounds to his torso, authorities reported. No arrests have been made, and the investigation remained ongoing.

On Friday at approximately 3:15 a.m. near the corner of Canal Street and West Broadway, a 55-year-old victim allegedly pushed another man who then slashed him in the neck, CBS2 reported. The victim was taken to an area hospital in stable condition, and police have not issued a description of the suspect.

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Anyone with information about any of these incidents should call the NYPD Crime Stoppers hotline at 1-800-577-TIPS or, for Spanish, 1-888-57-PISTA. The public can also submit tips at   www.NYPDCrimeStoppers.com