No. As things stand, there are no reports that mention Chris Bumstead being arrested.
His sister was taken into custody from her house in Memphis, Palm City but there is no specific mention about her brother.
Likewise, no talks about him being taken away by the police can be found on any social media platforms.
Hence, it is clear that the Canadian bodybuilder Chris Bumstead has not been arrested and is free at the moment.
Further investigations might be carried on about the incident and the proceedings might be revealed as well.