Seven people have been arrested as part of a Criminal Assets Bureau investigation into a criminal gang laundering money for other criminal gangs.  A total of 11 searches, including three business premises and eight residential properties, were carried out in counties Dublin and Wicklow this morning.  Almost €450,000 in cash was seized, along with three luxury cars and high value goods.  More than €260,000 has also been frozen in a number of bank accounts.  Gardaí said the ongoing intelligence-led operation is targeting foreign nationals involved in the laundering of the proceeds of crime, accumulated by Irish-based organised crime groups.  The seven in custody are being detained in various Dublin garda stations.