It’s been reported that he is but I am not sure he has explicitly said he is.
Further to this response, the link below confirms what I mentioned. This snip (direct quotes) is from the article from June 2021.
Mr Wolters said; “ The probe into the Behan case is likely to take a few more months while the case of Maddie and the two separate cases of child abuse might take longer.
“We only have Christian B as a suspect in the Behan case.
“However, some information is missing which we are in the process of pulling together.
“We are working with the Irish and the Portugese authorities and it is taking a bit of time to get all the information we need.
“Once we have it all we will close the case.
“It will continue for a few more months but not three months as was previously reported.”
Hazel was raped in her flat in Praia da Rocha – about 30 minutes away from the holiday village where Maddie went missing – a year before the American woman was attacked
www.irishmirror.ie