The NYPD put out the following tweet:
Don’t put your cellphone under a pillow when sleeping or when charging your device. Please share this tip and b safe!
Apparently they have started fires!! According to some articles I have spotted Third-party chargers and other gadgets are usually the culprits in cases like these.
John Rudy
See full article here: http://www.whdh.com/story/31254980/nypd-shows-why-not-to-put-your-cell-phone-under-your-pillow