Yes, it was in this article. You must have missed it. It was in this paragraph:
Merino was arraigned Monday on a charge of desecrating human remains, a second degree crime in New Jersey. A judge set bail at $400,000 with conditions that included Merino surrendering his passport and submitting to a psychological evaluation. He faces a maximum of 10 years in prison, if convicted.
That doesn’t necessarily mean he’s from another country. Americans can also have passports.
Having a passport doesn't make one a foreigner.