Sarika was found hanging in her house yesterday, they said.
According to a complaint by her brother, Sarika, who had married Ankur Jain in 2014, was being harassed for dowry.
When she failed to fulfil her in-laws' demands, she was strangulated to death, police said.
A case was registered against her husband and her mother-in-law, Rekha Jain, they said, adding that Ankur Jain was arrested.
The body was sent for post-mortem, they added.