Police Tuesday arrested the last of three suspects wanted in connection with a robbery and attempted murder at a bank in Yokohama on Aug. 21.
Susumu Sugiyama, 54, an unemployed resident of Yokohama, was arrested in a hotel in Koshigaya, Saitama Prefecture, they said.
Police said they found a gun and bullets in his hotel room.
Also arrested was Natsumi Kobayashi, 21, who was staying with Sugiyama, for alleged violation of firearms laws. Police said Sugiyama has admitted taking part in the holdup.
Underworld figures Hiroyuki Kobayashi, 42, and Takashi Kawada, 27, were arrested on Aug. 28 when they turned themselves in to Kanagawa Prefectural Police. Hiroyuki Kobayashi is a senior member of an affiliate of the Inagawa-kai crime syndicate.
The three men reportedly admitted perpetrating the robbery, in which two guards from the security firm Sogo Keibi Hosho Co. were shot and wounded and about 10 million yen was stolen.
The holdup occurred in a parking lot of the Isezakicho branch of Shonan Shinkin Bank in Yokohama shortly before 10 a.m. on Aug. 21.
The robbers fled in a car with four metal cases containing cash and promissory notes stolen from the guards' security van parked in the lot, police said.
They said they have also obtained an arrest warrant for Sugiyama on suspicion of attempted murder in the shooting of a senior underworld figure on Aug. 28 in Yokohama.
Sugiyama is suspected of shooting Tokihiko Terukawa, 54, in the chest in a bar, police said earlier.