(Reuters) - Twelve people were missing on Thursday, a day after a blast at the site of an optical electronics factory 50 km (30 miles) northeast of Moscow killed one person and injured more than 60.
Investigators say pyrotechnic equipment was being stored in the rented warehouse on the grounds of the Zagorsk Optical and Mechanical Plant where the blast occurred. At least 30 people were admitted to hospital, including six to intensive care.
