Five laborers and a child were charred to death in a massive fire in an under-construction 13-storey building "Prarthana" in Mumbai's Juhu Vile Parle Development (JVPD) Scheme.
Another 11 were rushed to RN Cooper Hospital with severe burns; eight are critical.
Fire-brigade is searching for the laborers stuck in debris; four are missing.
Police suspect an LPG cylinder blast caused the blaze.
After the fire erupted, locals alerted the fire brigade, and three engines were rushed to the site; the flame was soon brought under control.
While police are yet to ascertain the actual cause of the fire, an eyewitness claimed a loud sound was heard just before the blaze erupted, suggesting a cylinder blast.
Officials found damaged stoves and LPG cylinders.
Police said the blaze was confined to the 13-storey building's ground floor where scrap material was stored.
Laborers were living in 15-17 makeshift houses in the stilt portion.
Doctors said they have not been able to ascertain the age of the bodies; most of the injured are critical and are being stabilized.
Police are investigating if negligence on anyone's part triggered the fire.
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