Asaduzzaman Khan said this while visiting the Thakurpur village in Rangpur district, about 300 km from Dhaka.
The activists of the country's largest Islamist party Jamaat-e-Islami, a key ally of the Opposition Bangladesh Nationalist Party (BNP) led by former prime minister Khaleda Zia, went on the rampage on Friday, saying the post had hurt their religious sentiment.
At least one person died when police opened fire on the rioters. Rangpur Superintendent of Police Mizanur Rahman said that
"Titu Roy has been arrested, and legal action will be taken if he is found guilty," Khan was quoted as saying by the bdnews24.com.
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Roy, who hails from Thakurpur village, has been accused of 'insulting religion' in a post on Facebook.
The minister said that he has heard that Roy was illiterate and left home about eight-to-ten years ago.
The police has filed two cases at the Kotwali and Gangachara police stations and arrested 128 suspects, Rangpur's Additional Superintendent of Police Zakir Hossain said.
"Police are investigating the matter. Such incidents are occurring nowadays. It is a conspiracy," Khan said.
Roy's mother Jiten Bala claimed that her son never went a school and he is a village poet.
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