The U.S. Embassy in Sweden issued a security alert to U.S. citizens, warning that Iran could use local criminal gangs to carry out attacks against U.S. and Israeli interests.

The embassy in Stockholm posted a security alert on Monday, citing local media reports speculating that Tehran could use connections within criminal gangs to carry out reprisal attacks over the recent U.S. bombing of its nuclear sites. It specifically warned of the Foxtrot Network, a gang run by a Kurdish migrant to Sweden who is currently believed to be residing in Iran.