One policeman was killed as supporters of Congress Rajya Sabha MP Sanjay Singh and his son Anant Vikram Singh clashed in Amethi on Sunday.
The police had to baton charge to disperse the mob.
The father-son duo has been undergoing a rift over property dispute. The issue is regarding the ownership of Sanjay Singh's ancestral Bhupati Bhawan Palace in Amethi's Ram Nagar area also known as the residence of the "Raja of Amethi".
Sanjay' first wife Garima had returned after 18 years in July this year, claiming to be his lawfully wedded wife. She entered the palace with three of her children, Anant being one of them.
She had also declared to not let Sanjay's second wife and former Amethi MLA Ameeta Singh enter the palace.
Sanjay had earlier claimed to have divorced Garima 20 years ago. Garima, however, rubbished his claims, and said that it was a fraud and was declared null and void by the Supreme Court.
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Later, Garima occupied two rooms and a make shift kitchen in the palace.
Anant had earlier lodged a series of FIRs against the caretakers of the palace for torturing his family.
Today's clash broke out as Sanjay and Ameeta were about to arrive in Amethi and enter the palace.
