A 55-year-old woman has been arrested for allegedly poisoning her husband by serving him insecticide-laced food over marital dispute, police said on Thursday.

According to a police official, the woman, a resident of Dharavi, allegedly mixed a poisonous liquid used to kill cockroaches in the food of her husband (65), who survived after he was hospitalised. The couple had been locked in a long-standing marital dispute and often argued over domestic issues, which had led to their separation, he said.