Police arrested an Egyptian couple for allegedly swapping sex partners with other married couples, security officials said.

The officials said the two — a civil servant and his teacher wife — allegedly solicited the other couples over the Internet and invited them to their home. The officials spoke on condition of anonymity Sunday because they were not authorized to talk to the media.

Police are looking for others who participated in the sex parties.

Sex out of wedlock is illegal in Egypt, where the constitution says Islamic law is the main source of legislation.