United News International (UNI)- Seven members of the doomsday cult Aum Shinrikyo, including founder Shoko Asahara, were executed July 6 in Tokyo, Japan for their 1995 terror attack.

The cult is responsible for several deadly attacks, most notably an attack using the nerve agent, Sarin, on a Tokyo subway that killed 13 people and injured 6,000 in 1995.

The Sarin attack was the worst terror attack Japan has seen.

The cult tried on several occasions afterward to release hydrogen cyanide in different stations, but each attempt failed.

According to The Japan Times, Asahara told his followers the attacks were a “holy attempt to elevate the doomed souls of this world to a higher spiritual stage.”

Sixty-three-year-old Asahara, who organized most of the attacks, was convicted of 13 crimes that resulted in 29 people dead.

He, along with six other cult members, were hanged in a Tokyo detention house for their crimes.

Another six members are still awaiting execution.