Shah Alam, an OC of the Detective Branch of police who investigated the case, submitted the charge sheet in Habiganj Chief Judicial Magistrates Court on Saturday, Bidhan Tripura, the district’s superintendent of police, told a media briefing on Sunday.
Beauty’s father Sayed Ali and his 'partner in the crime' Moyna Mia had already given their statements to the court, Bidhan said.
The other suspect named in the charge sheet is Kamal Mia, who was allegedly hired by Sayed to kill Beauty.
Beauty’s mother Husna Begum took her back after finding her and her father Sayed started a rape case against Babul.
SP Bidhan said Moyna, whose wife Asma Akter had lost to Babul’s mother Kalamchan in the local union council elections, had suggested to Sayed that they should kill Beauty and frame Babul.
Beauty’s body was found in the backswamps of the area on Mar 17.
A photo of Beauty’s body, wearing a red dress and lying on green grasses, went viral on the social media.
Babul was arrested later after the murder of Beauty.
Police said they arrested Moyna after detecting his presence at the crime scene by tracking his mobile phone and then Sayed following Moyna’s statement.