EL-ARISH, EGYPT — Two U.S. tourists and their Egyptian guide who were abducted by a Bedouin in Egypt’s Sinai Peninsula last week were released unharmed on Monday after negotiations with security officials and tribal leaders.

The Rev. Michel Louis, 61, and 39-year-old Lissa Alphonse, both Boston-area residents, had been kidnapped from a bus on Friday along with their guide, Haytham Ragab, on a Sinai road by a Bedouin who was demanding the release of his uncle, who had been detained by Egyptian police on suspicion of drug possession.

The kidnapper, Jirmy Abu-Masuh, said he handed the three over to security officials near the Sinai city of el-Arish on Monday after he was promised that authorities were working on his uncle’s release.

“We are a people of mercy and they don’t have anything to do with this,” Abu-Masuh said, referring to the Americans. The three released captives later appeared at a police station in the northern Sinai city of el-Arish.

In Boston’s Dorchester section, where Louis lives, family members and friends celebrated on the porch of his home. “We are in joy after receiving such a message and we believe in God and let me tell you, He did not let us down,” Louis’ oldest son, the Rev. Jean Louis, said.