1.   His colleagues killed themselves with grenades, but when Nakajima tried, his grenade failed to explode.

2.   The grenade failed to detonate, and he continued fighting.

3.   The grenade failed to explode.

4.   Capt. Kasman of the Jakarta police said the grenade failed to explode.

5.   He said the safety pin had been pulled but the grenade had failed to explode.

6.   The grenade failed to explode but pierced three walls at the Government College of Commerce and Economics, police said.

7.   The second grenade failed to detonate the spokesman added.