Cops have arrested the disgruntled tenant who gunned down the superintendent of his Bronx apartment building, and wounded two others, during an ongoing argument over access to the building’s backyard, officials said Thursday.

Jimmy Avila is facing murder, attempted murder and multiple weapons possession charges for blasting away at building super Ryan Hines , 37, inside the College Ave. apartment building near E. 170th St. around 8:30 a.m. on Wednesday, officials said.

He also struck and wounded a 62-year-old fellow tenant standing next to Hines and a 59-year-old man as he continued to shoot Hines as he chased the super into the backyard, officials said.

After the shooting, Avila, who has an established mental health history with two documented incidents with the NYPD, hid in his fi

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