The 20-year prison sentence handed down to Japanese Red Army leader Fusako Shigenobu, 64, looks to become final because the Supreme Court has rejected her appeal, the court said Friday.

The Supreme Court on Thursday endorsed the Tokyo District and High court rulings tying her in with other Red Army members in the seizure of the French Embassy in The Hague in September 1974 and her repeated illegal entry to and exit from Japan.

Shigenobu reportedly went to Beirut in 1971 and formed the Japanese Red Army while cooperating with the Popular Front for the Liberation of Palestine, leading various terrorist attacks.

In the Hague incident, the courts said, Shigenobu and other Red Army members took the ambassador and other officials hostage and shot and wounded two police officers.

On an international wanted list, Shigenobu was found and arrested in Osaka Prefecture in November 2000 and declared the dissolution of the Japanese Red Army the following April while in jail. She has repeatedly denied involvement in the Hague hostage-taking.

Fellow Hague terrorist Haruo Wako, 62, has also had his sentence finalized. The life term of Jun Nishikawa, 59, is still before the Supreme Court.