An alleged senior honcho at Iran-backed terror group Hezbollah was federally charged Wednesday with helping plan the deadly 1994 bombing of a Jewish center in Argentina, and spending decades recruiting and training other terrorists.

Samuel Salman El Reda, 58, helped “plan and execute” the truck bombing of the Asociacion Mutual Israelita Argentina building in Buenos Aires — which killed 85 people and wounded hundreds more, court papers unsealed in Manhattan federal court said.

The alleged Hezbollah leader has also been a part of terrorist operations elsewhere in South America, in Asia and in Lebanon — where he’s still be based and “remains at-large,” the Justice Department said in a press release.

Between 2007 and 2015, El Reda “helped recruit, train and manage” members of the militant group, deploying operatives to Thailand, Panama and Peru to stockpile explosive chemicals and scout locations for potential terrorist attacks, the indictment states.

El Reda was hit with charges including providing material support to a terrorist organization that together could lead to a sentence of 55 years in prison if he’s brought to the US to face trial.

“This indictment serves as a message to those who engage in acts of terror: that the Justice Department’s memory is long, and we will not relent in our efforts to bring them to justice,” Assistant Attorney General Matthew Olsen said in a statement.

Court records show that an indictment against El Reda was first filed in October 2019.

The US Department of State sanctioned El Reda in July 2019 and offered a $7 million award at the time for information they could use to track him down.

Federal officials did not explain Wednesday why they waited more than four years to unseal the charges and make the allegations public.