ISIS fan nab at bus depot in B’klyn slay

PORT AUTHORITY cops grabbed a murder suspect Wednesday with ties to ISIS at the Midtown bus terminal, police sources said.

Cops spotted Matthew Passaro, 46, near a Greyhound bus inside the massive transit hub about 11 a.m., Port Authority spokesman JoePentangelo said.

Passaro, who is homeless and has “pledged allegiance” g to ISIS, , had a loaded .45-caliber pistol when police recognized him as a suspect in the fatal Sept. 20 shooting of a 47-year-old man inBoerum Hill.

“You’re lucky I didn’t shoot you,” ”P Passaro told t ld the officers, sources said.

Passaro (photo) has ties to the Islamic State and has “had communication” with ISIS members, thesources said.

He goes by the name A bu Bak ar Hassain, and frequented the Al-Farooq Mosque on Atlantic Ave., a house of worship with ties to the blind sheik who was convicted of conspiracy for 1990s plots to bomb New York land marks.

Passaro is accused of fatally shooting and stabbing Steven Vargas at the corner of Atlantic and Fourth Aves.Members of the NYPD/FBI Joint Terrorist Task Force took him into custody for questioning.