Egyptian police arrested 16 Muslim Brotherhood members on Tuesday and accused them of smuggling money and planning attacks in the country.
The Interior Ministry said the suspects financially helped members to co-ordinate terror attacks in Egypt and help to smuggle extremists into Europe with help from others in Turkey.
Egyptian authorities and Gulf states consider the group a terrorist organisation.
The Muslim Brotherhood's links, which stretch across the region and beyond, includes Qatar, one of its largest financial backers, having donated well over $1 billion (Dh3.67bn) in recent years.
Ousted Egyptian president Mohammed Morsi, a stalwart of the group, collapsed and died in a courtroom in Cairo in June 17.
He was removed from power by the military in July 2013 amid mass street protests against the Brotherhood and his divisive rule.