PRAYAGRAJ, April 1 -- Three people were arrested in connection with the murder of an Indian Air Force civil engineer in Uttar Pradesh's Bamrauli, police said on Monday.

Prayagraj additional police commissioner Ajay Pal Sharma said, "Investigation has revealed that IAF civil engineer SN Mishra, 50, was killed by the younger son of his domestic help on Saturday. Gautam, the elder son of his domestic help Sunita Devi, is currently in jail on charges of murder and robbery. The family needed money to get him released on bail and so they planned a robbery at Mishra's house."

He added: "Their initial plan was to rob. They disconnected the CCTVs and barged into the house premises through the back door. The noise apparently alerted Mishra's wife, ...