Massive explosion occurs in Dutch city Utrecht, 1 person injured

A massive explosion followed by a major fire struck the center of Dutch city of Utrecht, Netherlands, on Thursday, leaving at least one individual injured, officials reported. The Dutch news agency ANP quoted a local fire department spokesperson describing the event as a "gigantic explosion", as reported by news agency AFP.

The specific cause of the blast is currently unknown, and authorities are still determining if there are additional casualties. As emergency crews converged on the site, the public was warned to avoid the historical city center, where television footage revealed thick smoke and debris littering the streets.

"It's also possible that there are still people under the rubble," city mayor Sharon Dijksma told public broadcaster NOS.

In response to the crisis, Utrecht's local hospital established an emergency trauma unit, and the Red Cross has issued an urgent call for volunteers to assist.

"I knew right away that this was bad," NOS quoted one witness, Margot Schroevers, as saying.

"The ground was shaking," she added.