A fugitive Columbian killer was cut loose in the US after crossing the border illegally — despite being convicted of homicide and a slew of other violent charges back home, immigration authorities have admitted.

The 49-year-old, who US officials didn’t name, had been arrested in Bucaramanga, Colombia, back in 2014 and slapped with aggravated homicide, aggravated theft and unlawful possession of a weapon charges.

He was convicted and sentenced to 17 years in prison in 2016.

But when he was picked up by US Border Patrol near San Luis, Arizona, in November last year after illegally crossing the border, the fugitive was still set free on an order of recognizance, ICE officials said.

Instead of being deported given his dangerous rap sheet, he was just handed a notice to appear before a federal immigration judge at a future date.

The Columbian perp was eventually nabbed last week at a home in Pittsfield, Massachusetts by ICE’s Enforcement and Removal Operations’ (ERO) Boston team.

“This Colombian national is wanted in his home country for some very serious crimes,” Todd Lyons, ERO Boston’s field office director, said in a statement.

“He attempted to hide out in Massachusetts, and now he will have to answer for his actions.”

It wasn’t immediately clear how, or when, the Columbian managed to break free from the local prison and make his way to the US.

It also wasn’t clear what eventually spurred ERO Boston to track him down, including whether or not he missed his immigration court date.

The Post has previously reported how border officials have to request information from the FBI if red flags appear on a migrant’s file, a process which can take longer than the time an individual is in custody — typically around 72 hours with the current chaotic scenes at the border.

In April it emerged a known Somali terrorist had free reign in the US for almost a year before authorities caught up with him.

The dangerous Colombian felon will now remain in ICE custody until deportation proceedings are held, according to authorities.

“ERO Boston will continue to prioritize public safety by aggressively apprehending and removing the most egregious noncitizen offenders from our New England neighborhoods,” Lyons said.

ERO is tasked with detaining and removing illegal immigrants from the US — including at the order of immigration judges with the Department of Justice’s Executive Office for Immigration Review.

The EOIR is run separately from Department of Homeland Security and ICE.

More than 7 million migrants have been encountered by agents along the southern border since President Joe Biden took office in 2021, the latest CBP data show, including 961,537 in the current fiscal year, which runs until Sept. 30.