An illegal migrant terror suspect nabbed in New York City in December has been ordered deported by an immigration judge, The Post has learned.

South African migrant Umar Farooq Ashraf’s arrest came three months after he was released at the border — despite authorities being aware of his alleged terror ties.

Ashraf, 18, was captured at a Brooklyn apartment as part of a “multi-agency effort” to hunt him down, then Border Patrol Chief Jason Owens announced at the time. He now awaits deportation in an Immigration and Customs Enforcement (ICE) detention center in Raymondville, TX, according to sources.

Ashraf was first busted in September in Texas by state troopers while sneaking across the border into Normandy and detained for alleged criminal trespassing, according to Texas Department of Public Safety Lieutenant Chris Olivarez.

While state cops were screening Ashraf, they received an alert from the Terror Screening Center identifying him as a “spouse or child of a known or suspected terrorist.”