Four Brazilian police officers were released unharmed Saturday after being held for more than a week by a group of Amazon Indians.

The officers were kidnapped in the northern state of Roraima, after President Luiz Inacio Lula da Silva signed a decree on April 22 creating the Raposa Serra do Sol reservation.

The decree sets aside 17,000 square kilometers exclusively for more than 10,000 Indians, many of them members of the Macuxi tribe. A small group of Macuxi say they will be left jobless because the non-Indian farmers who employ them will be forced off the reservation.

The kidnappers released the policemen after intense negotiations with Roraima state officials and Brazilian federal officials.