Cops bust Bk. man in ex slay

A man cops say killed his exgirlfriend execution-style in a hail of bullets on a Brooklyn street turned himself in early Monday to face charges, cops said.

Gabriel Rivera, 26, showed up at the 83rd Precinct stationhouse hours after 24-year-old Sade Sanchez was shot to death on Menahan St. near St. Nicholas Ave., just down the block from her Bushwick home, cops said.

The fusillade of bullets hit Sanchez in the neck, chest, shoulder and stomach about 10:25 p.m. Sunday, police said. She died about 15 minutes later at Wyckoff Heights Medical Center.

Witness Erick Lopez, 41, who works on the block, said he saw Rivera with a gun in his hand.

“He was looking for her then I heard shots. I saw she was ducking behind the cars across the street,” he said. “He was across the street and then ran over. He shot at her from two or three feet away four times. She was on the ground and he gave her two last shots."

Sanchez called police four times this year, including Oct. 3 and Saturday. At some point, she got an order of protection, cops said.