Police have registered a case against a shopkeeper in Maharashtra's Thane district for stocking and selling the banned nylon 'manja', days after the death of a 47-year-old man after the kite string slit his throat, an official said on Tuesday.

The incident took place in Bhiwandi town on Sunday night when the man was heading home on a motorcycle. The kite string got entangled around his neck and slit his throat, he said.