A Filipino man has been arrested after police found 10 guns and more than 200 bullets earlier this week in a Tokyo dormitory room where he recently lived.

Charls Aron Mitra, 29, turned himself in to a police station in Fuchu, western Tokyo, on Friday. He was arrested for allegedly possessing one of the guns, which were found in suitcases in the dormitory of a construction company where he worked.

Mitra denied the allegation. He told investigators he was keeping the suitcases for someone else and did not know what was in them, according to the police.

The police initially mobilized a bomb disposal unit after the dormitory alerted them Tuesday to the discovery of suspicious items. The bomb squad said there was no risk of an explosion but found two revolvers, eight automatics and about 200 bullets in two suitcases.

Mitra was hired by a subcontractor of the contractor but had recently been fired, according to the police.