Indians in a remote Amazon state on Saturday freed four federal police officers who were held hostage for more than a week to protest a new reservation that forces out non-Indian employers, authorities said. The officers were released unharmed after the federal government agreed Friday night to enhance living conditions _ including access to electricity, schools and agriculture projects _ for Macuxi Indians in the northern state of Roraima, federal police officer Wilson Salles Damazio told The Associated Press. An army helicopter on Saturday flew the officers out of the Flechal tribe, some 3,600 kilometers (2,240 miles) northwest of Sao Paulo. The Indians seized the four officers April 22 after President Luiz Inacio Lula da Silva signed a decree creating the Raposa Serra do Sol reservation, covering 17,000 square kilometers (6,600 square miles) near Brazil's northern border with Guyana. -- SP 2347 Local Time 2047 GMT