A freight train car exploded at the railway station in the suburb of Tbilisi on March 18.
Security officials say that TNT was used as an explosive and described the incident as a sabotage.
A railway link was damaged near Tbilisi on March 17 as a result of TNT explosion.
“Those behind these explosions aim at intimidating population and terrorizing the government,” Deputy Security Minister Gigi Ugulava told reporters.