At least one factory worker was killed, another missing while six others were injured when an explosion ripped through a textile unit in the Boisar MIDC area followed by a huge blaze, police said here on Saturday.

The incident occurred around 5.30 am at the Jakharia Fabrics Pvt. Ltd. when a handful of night-shift workers were on duty, said Boisar MIDC Police Station Senior Inspector Suresh Kadam.