Sohail Nadvi, Amravati district head of PFI, was taken to Nagpuri Gate police station and was questioned, said an official.
A First Information Report was registered against an unidentified person under IPC section 507 (criminal intimidation by anonymous communication) at Sabarmati police station here on Tuesday.
Prophet remarks: Kolkata Police asks Nupur Sharma to appear; plea filed in SC against suspended BJP leader
Sharma has failed to appear before officers of Amherst Street Police Station and Narkeldanga Police Station despite being summoned by them two times each.
The persons involved in the fight have been brought in and detained so no law and order situation may occur, said Rajkumar, DM, Arrah.
Ajmer Assistant Superintendent of Police Vikas Sangwan said Chisti was caught at his residence in Khadim mohalla.
The Supreme Court had on July 1 come down heavily on Sharma for her controversial comments against Prophet Mohammad, saying her 'loose tongue' has 'set the entire country on fire'.
'Nupur Sharma row BJP's conspiracy to further its divisive policy': Mamata hits out at saffron party
Speaking at a conclave organised by a television channel, which was broadcast live on the CM's Facebook page, Banerjee alleged that BJP was spreading fake news and videos through social media.
'Crossing that Lakshman Rekha many times': SC judge who heard Nupur Sharma's plea bats for mandatory regulation of social media
The remarks by Justice Pardiwala came amid an uproar by a section over the strong oral observations of a vacation bench against the suspended BJP leader for her comments against Prophet Mohammed.
'Team India is one where people are united, not divided': Rahul Gandhi amid rows over Udaipur, Amravati killings
Gandhi, in his speech, further said that the only India possible was a 'secular India'.
Court remands Amravati chemist's killing 'mastermind' in police custody; cops investigate bank accounts of NGO
Sheikh Irfan Shaikh Rahim alias Irfan Khan, the seventh accused in the murder case, was arrested from Nagpur on Saturday.
Udaipur-Amravati killings: Finger-pointing won't do, governments, people must work to normalise situation, says Kejriwal
Queried on the two murders, Kejriwal said whatever was happening in the country at present was not good and that he condemns it in the strongest way possible.
The police is also suspecting that the accused committed the offence as the victim had allegedly shared a post on a social messaging platform in support of Nupur Sharma.
He also targeted Congress leaders Rahul Gandhi and Priyanka Gandhi Vadra for not visiting the party-ruled Rajasthan where a tailor was hacked to death by two men to avenge an 'insult to Islam'.
The chemist, Umesh Prahladrao Kolhe, was killed on June 21, and five persons have been arrested so far in this connection, an official said.
'She is single-handedly responsible for what is happening in country': SC hits out at Nupur Sharma for Prophet remarks
The court's observations against the suspended BJP leader comes in the backdrop of the brutal murder of a tailor in Udaipur by two men.