Circle Officer City Sumit Shukla said the incident took place on Friday night, when an ice cream vendor Kesri (25) in an inebriated state attacked his 45-year-old mother and tried to rape her.
The mother somehow rescued herself and alerted her neighbours, who caught the ice cream vendor, he said.
A case has been registered in this regard against Kesri on a complaint lodged by his father, the CO said.
The accused has been arrested, the officer added.