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Taylor Swift‘s accused stalker was arrested early Thursday for allegedly breaking into her Tribeca apartment building — for the second time in less than a year, sources told The Post.

Roger Alvarado was arrested for allegedly breaking into the second-floor patio door to Swift’s home around 2:20 a.m., sources said.

When cops arrived, the door was open — and they soon found Alvarado allegedly “ransacked the place,” according to police.

Police said he used a ladder to climb the back of the building and then used a concrete block to smash through the glass door. He left a computer tower near the door.

Swift, who has an order of protection against Alvarado, was not home at the time, sources added.

Cops charged him with stalking, burglary, felony criminal contempt for violating the order of protection, criminal mischief and two counts of burglar tools.

Just last month, the 22-year-old fanatic was sentenced to six months in jail as part of a plea deal for breaking into the same home in April.

In that burglary, cops found Alvarado asleep in the star’s bed, though she hadn’t yet moved into the $18 million, three-story complex. He had also used her shower.

Alvarado’s latest bust is in violation of his probation, which he was set to serve in Florida, in addition to completing a mental health program.

In a recent interview with Elle magazine, the 29-year-old “Shake It Off” songstress admitted that her “biggest fear” is a violent attack at one of her shows — and that she carries military bandages around just to be safe.

“My fear of violence has continued into my personal life,” Swift said. “I carry QuikClot army grade bandage dressing, which is for gunshot or stab wounds.”

A rep for Swift didn’t immediately return a message.

Additional reporting by Craig McCarthy