duo wearing helments snatch chain from old woman

: Two helmet wearing men on a bike snatched a four and half sovereign gold chain from a septugenerain woman at Peelamedu today, police said.
The 75-year-old woman was going to dispose night waste in a dustbin near her house when they accosted her, snatched the chain and fled.
Before she could raise an alarm and alert neighbours, the duo managed to escape, they said
A hunt is on to nab them, police said.