Blood clot in lungs caused Mulayam Singh's son Prateek's death
13 May 2026

Prateek Yadav, the son of late Samajwadi Party founder Mulayam Singh Yadav, died due to a severe blood clot in his lungs, a post-mortem report has revealed.

The 38-year-old suffered a "cardiorespiratory collapse due to massive pulmonary thromboembolism," which means a large blood clot blocked blood flow to his lungs, causing heart and respiratory failure.

Injuries on Yadav's body 'antemortem': Post-mortem report
Investigation process

The post-mortem report also mentioned that all injuries on Yadav's body were "antemortem," meaning they occurred before his death.

However, officials have said that no final conclusions will be drawn until the forensic and chemical examination reports are received.

The entire heart and the clot-like material recovered from Yadav's lungs have been preserved for detailed histopathological examination.

Yadav was declared dead on arrival at hospital
Sudden decline

Yadav's health had deteriorated suddenly at his residence in Lucknow on Wednesday morning.

He was rushed to Civil Hospital around 5:30am but was declared dead at 5:55am despite medical efforts.

Civil Hospital director Dr GP Gupta said, "When the doctors reached there, his condition appeared critical. He was brought to the hospital, and despite all efforts by the medical team, he was declared dead at 5:55 am."

Who was Prateek Yadav?
Personal life

Yadav was the son of Mulayam Singh's second wife Sadhna Gupta and the stepbrother of Samajwadi Party chief Akhilesh Yadav.

He was educated at the University of Leeds in the UK and was involved in business ventures including real estate and fitness. He owned a gym called "Iron Core Fit" in Lucknow.

He was also involved in animal welfare activities through an organization called 'Jeev Ashray' that worked for the rescue, treatment, feeding, and care of stray dogs.