EL-ARISH, Egypt (AP) A shark tore the arm off an elderly German tourist at an Egyptian Red Sea resort, killing her almost immediately, security and diving officials said yesterday, only days after sharks badly mauled four other European tourists in the waters.

The German woman was swimming in the waters off Sharm el-Sheikh, a famed diving and vacation resort in the Sinai peninsula, when the shark attacked, Egyptian security officials said, speaking on condition of anonymity because they are not allowed to brief the media.

“It was definitely a shark attack,” said Hesham Gabar, the head of Egypt's Chamber of Diving and Water Sports.

Sunday's deadly attack, which forced authorities to indefinitely close the resort's beaches, comes after oceanic white tip sharks mauled three Russians and a Ukrainian tourist last week, also off the coast of Sharm el-Sheikh. In one of those attacks, a shark bit off an elderly woman's hand and tore off another woman's leg.

Following those attacks, Egyptian authorities closed the beaches in Sharm el-Sheikh. On Thursday, the Environment Ministry said two sharks suspected of mauling the four tourists were caught.

Authorities allowed swimmers back into the waters on Saturday after divers from the Chamber of Diving and Water Sports and the Environment Ministry scoured popular diving sites in an effort to ensure they were safe.

The Environment Ministry also ordered authorities to beef up security measures at beaches in the area. requiring diving centres to provide staff to supervise beaches and watch the waters for sharks.