Guns, knife claim 4 lives

Three people were fatally shot and one was stabbed to death in less than 24 hours across the Big Apple — marking a bloody start to the summer in the city.

The violence began just before 3 p.m. Wednesday, when 17-year-old Trequan Wingfield was shot in the chest outside of NYCHA’s Polo Grounds Towers, cops said.

Wingfield was taken to Harlem Hospital in critical condition and was declared dead shortly after.

The suspect fled. No arrests have been made.

Less than three hours later, a 40-year-old man was shot dead in the East New York section of Brooklyn, authorities said.

The victim was blasted in the back on Ashford Street near Linden Boulevard around 5:45 p.m., police said.

He was pronounced dead at the scene by EMS workers, cops said.

The bloodshed continued early Thursday, when two men were shot, one fatally, in the Olinville section of The Bronx, police said.

The shots rang out around 12:30 a.m., authorities said.

Responding cops found a man, 26, with gunshot wounds to the chest and shoulder, who was taken to Montefiore Medical Center by private means, police said. He was pronounced dead at the hospital.

Hours later, a 45-year-old man was stabbed to death in upper Manhattan.

The victim was knifed in the upper left torso in Washington Heights around 5:20 a.m., police said.

He was later identified by cops as Rashaun Howze, a convicted murderer who was on lifetime parole.

He was taken to Mount Sinai Morningside, where he was pronounced dead.

A 38-year-old man was also hurt in a shooting on the grounds of NYCHA’s Walt Whitman Houses in Fort Greene around 12:40 a.m. Thursday, cops said.