Ahmedabad: A city sessions court on Monday sentenced a woman to life imprisonment as she was held guilty of killing her husband after he refused to have sex with her.Additional sessions judge U M Bhatt convicted 54-year-old Vimla Vaghela to life imprisonment and fined her Rs 2,000. On default of payment, the convict will have to serve a further six months, sources said.According to case details, Vimla and her husband Narsinh were alone at their home in Noblenagar in Sardarnagar locality during an afternoon on November 2, 2013.The chargesheet filed against the woman claimed that after her husband refused to have sex with her, she got infuriated and fought with him.She doubted her husband's fidelity and accused him of having an extra-marital relationship. In a fit of rage, she picked up a stick and started beating her husband on his head. He died due to multiple injuries.After the murder, the woman locked her house and went to Sardarnagar police station and informed police about her husband's death. She became the complainant in this case.It was later revealed that she was the murderer. She was arrested and a chargesheet was filed against her.