A disgruntled tenant shot to death the superintendent of his Bronx apartment building and wounded two men on Wednesday in the midst of an ongoing dispute over access to the backyard — before calling a local TV news outlet as he hid from cops, according to witnesses.

The shooter opened fire at his 37-year-old building super and a 62-year-old fellow tenant as they passed the suspect’s first-floor doorway in the building on College Ave. near E. 170th St. at about 8:30 a.m., cops said.

“I didn’t mean to do this, but I had to do it because these people were threatening my life,” the suspect told News 12 Bronx when he called the station before being taken into police custody. The Daily News is withholding the suspect’s name because charges were still pending against him.

The super was sho

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