He was referring to Jersey City, IIRC. Is that where his apartment is? Or was he in his apartment in NYC warching on TV? His words are unclear. He could have seen a small local celebration on local TV and a larger celebration simultaneously on CNN from Mecca. I didn’t get the impression he was looking out his window.
There are reports of eyewitnesses seeing celebrations in Brooklyn. Some of these resulted in fights. There are likely police reports out there. But we’d need journalists interested in the truth...