Lucknow, May 13 -- Samajwadi Party founder Mulayam Singh Yadav's younger son and BJP leader Aparna Yadav's husband, Prateek Yadav, passed away at Lucknow's civil hospital on Wednesday morning.

Prateek Yadav, the stepbrother of Samajwadi Party Chief Akhilesh Yadav, was brought to the hospital by his family members on Wednesday morning, where he was declared dead.

The exact cause of his death is not known yet. Further details are expected to be revealed after the post-mortem examination.

Prateek was the son of Sadhna Gupta, the second wife of Mulayam Singh Yadav. Despite being from Uttar Pradesh's most prominent political family, he largely stayed away from politics and focused on business and fitness ventures in Lucknow.

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