NCA Deputy Director Craig Turner has described it as a "significant arrest" because the suspect allegedly "having played a key role in the manslaughter of those who died".Ten members of a suspected Afghan smuggling group involved in the incident have already been charged in France.The two countries have signed a new €72.2m agreement that will see France increase the number of police patrols along its beaches.Local authorities say recent mild weather and calm waters have led a growing number of people to attempt the dangerous crossing.A report by Le Monde newspaper has suggested that victims of last year's migrant tragedy had called the French authorities on 15 occasions to ask for help and that French rescue workers waited for the shipwreck to drift into UK waters."