Samajwadi Party leader Aman Mani Tripathi, son of jailed politician Amar Mani Tripathi, was arrested by CBI on Saturday in connection with the alleged murder of his wife.
Sara, 27-year-old wife of Aman Mani Tripathi had died in a car accident in Firozabad on National Highway 2 in July last year.
However, Aman Mani had escaped unhurt. Based on a complaint by Sara's mother Seema Singh an FIR was registered against Aman Mani in Firozabad district.
Singh had alleged that her daughter, who had married Aman Mani at an Arya Samaj temple in Lucknow in July 2013, was murdered.
Aman Mani's parents, Amar Mani and Madhu Mani, were against the marriage, Singh had said.
Aman Mani, however, had claimed that Sara died in the road accident when they were on their way to New Delhi for a holiday.
After Singh had demanded that chief minister Akhilesh Yadav order a CBI investigation into the incident, the matter was referred to the central agency, which took over the probe from UP Police a few days later.
Aman Mani was recently given ticket by the Samajwadi Party to contest assembly elections in the state.