Accidental SCORPION STARE activation, is my guess.

The 121st Precinct cop "noticed there was smoke exiting from the bottom portal and immediately removed it," a department spokesperson said. "After it was safely removed, the device exploded."

The officer was not injured, but now all Vievu LE-5 body cameras are being recalled, the NYPD said. [...]

"The product is generally crap in all models," a high-ranking NYPD official said. "It's not good in the field. They break easily."

The source added that the power switch on many cameras is too sensitive, which makes it difficult to record important incidents.

"The city's vending process generally always goes for the cheapest vendor despite superior products elsewhere," the source said. "I guess you get what you pay for." [...]

Especially when your vendor is The Joker?

"Nothing is more important than the safety of our officers, and equipping the NYPD with the best equipment is a paramount priority," a spokesperson said.

I mean, there are actually a lot of things more important than that, things like protecting the innocent from the police, upholding the Constitution, that sort of thing. But hey.

"It happens sometimes. Cops just explode. Natural causes."

Previously, previously, previously, previously, previously, previously, previously, previously, previously, previously, previously.