<sod >Stephan Mayer, a politician from Angela Merkelâs CDU, said the new suspect had ties to Islamic extremists and was meant to be deported from Germany earlier this year.< eod>< sod > Stephan Mayer, a politician from Angela Merkelâs CDU, said the new suspect had ties to a network of Islamic extremists, reported to include an extremist preacher known as Abu Walaa who was arrested as part of a cell of Isis supporters sending militants to Syria earlier this year.< eod>