Based on a tip-off, the sleuths of the Special Investigation Division surrounded the house of Shahjahan at Kuniyamuthur and arrested him this afternoon, police said.
Shahjahan was reportedly in Saudi Arabia, when the special investigation team arrested 10 persons, majority belonging to the proscribed Al Umma, in connection with the case. Shahjahan and another accused Mujiboor Rahman were absconding.
Shahjahan is being interrogated by the special team, police said.
Police had recovered a bag containing bombs from an apartment of Classic Towers near the Government Hospital on December one, 1997.