Brooklyn

Two knife-wielding crooks were captured following a livery robbery in Flatbush.

Jonathan Joseph, 18 and Duquan Johnson, 17, jumped into a livery cab at Flatbush and Church avenues at 7:30 p.m. Thursday, sources said.

Johnson slid into the front passenger seat, pulled a knife and demanded money from the driver, sources said.

The held-up hack handed over $40, then stepped on the gas and pulled alongside a police car as the crooks jumped out and ran, cops said.

Officers caught the duo nearby and recovered the stolen cash, sources said.

Both were charged with robbery and harassment, said a spokesman for DA Charles Hynes.

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A city Department of Transportation supervisor was arrested Friday after he was caught extorting two small businesses in East New York, police said.

Kenrick Forde, 48, a DOT associate highway and sewer inspector, was caught on surveillance cameras leaving the scenes in his city-issued DOT vehicle, sources said.

Bronx

A man harassed a 21-year-old woman and assaulted her in Mount Eden, police said.

Anthony Quinones, 25, called the woman on her cellphone on March 12 at 10 a.m., threatening to burn down her house with her and her son inside, cops said.

This past Thursday at 10:48 a.m., he climbed through her apartment window on the Grand Concourse near 168th Street, shoved and punched the woman, then stole her phone and fled, cops said.

He was arrested on charges of aggravated assault and burglary, said a spokesman for DA Robert Johnson.

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A man was stabbed to death outside a Melrose bodega, cops said.

Richard Canela, 31, was standing in line at the late-night window outside a bodega on East 165th Street near Sheridan Avenue at 2:30 a.m. yesterday when he got into an argument, police said.

The foe pulled a knife and stabbed Canela, who died at Lincoln Hospital. John Doyle and Kirsten Fleming