In Bihar, the police seized 2500 kg of explosives from two places of Aurangabad district and arrested four persons in this connection.DGP Police said that acting on a tip off, Bihar Special Task Force personnel raided a house in Kishanpur village under Amba police station yesterday and seized 22 bags containing 50 kg of explosive each from there.Two persons, including the house owner, were arrested from the village.In another raid at Sarai village under Nagar police station, the STF men found 28 bags, containing 1400 kgs of explosives. Two persons were arrested from Sarai too.