A fifth man, the alleged mastermind, was captured in February and awaits trial.
Among the guerrillas was a long-sought prize - the alleged mastermind of the massacre of 127 bus passengers in April.
The group's alleged mastermind, Alexandros Yiotopoulos, was also in police custody.
The alleged mastermind of that attack, Ramzi Yousef, followed a similar escape route.
Hormuzan, the alleged mastermind of the plot.
He is the alleged mastermind of the Nandigram violence and also accused to have involved in disappearance of six persons during the same in 2007.
Authorities claimed that the two were the alleged masterminds or "black hands" behind the 1989 Tiananmen Square protests.
Tariq Ahmad Dar, was convicted as the alleged mastermind of the attacks on 10 November 2005 without any evidence.
The alleged mastermind of the hijacking, who did not take part in the actual operation, was Takaya Shiomi.
Two policemen were suspended on 31 December in connection with the serial murders as angry residents charged the house of the alleged mastermind.