As news broke about a terrorist attack that left eight dead in lower Manhattan Tuesday afternoon, singer Josh Groban, who'd been at a nearby dog park, took to Twitter to report that he'd heard multiple shots fired.

"Oh my god, I just heard gun shots and ran with my dog. Downtown. F---," the shaken singer tweeted.

I hope everyone’s ok. Was half a block from me, didn’t see it but heard 8-10 quick rounds fired off. Be safe with your kids out there. — josh goblin (@joshgroban) October 31, 2017

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"I hope everyone’s OK," Groban continued. "Was half a block from me, didn’t see it but heard 8-10 quick rounds fired off. Be safe with your kids out there."

The 36-year-old said he had plans to be in the area during the incident, which involved a suspect deliberately driving a truck on a bike path before getting out with imitation firearms, according to NBC News. The man was shot by police and taken into custody.

Singer Josh Groban had been in a dog park not far from where Tuesday's terrifying attack took place. Getty Images

"I’m shaking," wrote Groban. "That’s the corner I was supposed to have my coffee but my dog pulled me into the park half a block away 10 min before shooting."

Earlier, the singer had shared this sweet photo:

Two things get me through my week. My shrink, and meeting friends at the dog park. pic.twitter.com/SXYFq3kSAL — josh goblin (@joshgroban) October 31, 2017

Later, Groban tweeted a 20-second video he filmed of police officers and firefighters rushing to the scene, writing, "Once I got far enough away, I took this video of the quick response from our amazing NYPD and NYFD."

Once I got far enough away I took this video of the quick response from our amazing NYPD and NYFD pic.twitter.com/v0nwJiqmDw — josh goblin (@joshgroban) October 31, 2017

"Devastated for the victims and their families tonight and inspired by the spirit of this city," he later wrote. "Sirens and trick or treaters everywhere."

For more on Tuesday's terrifying attack, follow NBC News.