PORT-AU-PRINCE, Haiti — Haiti's former prime minister was detained Sunday on suspicion of orchestrating killings during the February rebellion leading to the ouster of President Jean-Bertrand Aristide, authorities said.

Yvon Neptune was detained at his home in the capital, Port-au-Prince, Police Chief Leon Charles told private Radio Vision 2000.

"There was no resistance," Charles said.

An official of Aristide's Lavalas Family party, former legislator Gilvert Angervil, said Neptune turned himself in because he knew authorities were looking for him.

Neptune is being held in connection with the February killings of Aristide opponents in St. Marc, a northern port city where violence flared during an armed rebellion that pushed Aristide from power and killed at least 300 people.

Neptune is the highest-ranking official to be detained since Aristide's Feb. 29 departure.

Lavalas officials claim party supporters are being killed by anti-Aristide forces and accuse the U.S.-backed government of interim Prime Minister Gerard Latortue of unfairly arresting several officials for alleged corruption and killings.