LUCKNOW, June 13 -- A constable posted at Chinhat police station was arrested in connection with an alleged investment scam-cum-robbery racket, while a CRPF sub-inspector identified as one of the key accused remains absconding, officials said on Saturday.

Constable Puran Singh was among four people arrested by a joint team of Chinhat police and the East Zone surveillance unit. Police said the gang allegedly lured people with promises of doubling their money in a short span and then robbed them after calling them to meetings.

The case came to light after Prabhakar Singh, a resident of Vrindavan Colony, lodged a complaint on June 11. He alleged that his brother Divakar Singh and friend Anoop Shukla were offered unusually high returns on i...