Relatives of 25 of the 44 people who died in a 2001 fire in Tokyo's Kabukicho entertainment district filed a 1.25 billion yen compensation lawsuit Friday with the Tokyo District Court against six people and the company that manages the building.

The six include Shigeo Segawa, 61, who effectively owns the four-story Meisei 56 building in Shinjuku Ward, and Kazuo Yamada, 50, whose firm Kurume Kosan runs the building, as well as managers of the building's tenants. Kurume Kosan was also sued.

All six were arrested Tuesday on suspicion of professional negligence resulting in death.