1.   Highly toxic plutonium is also suspected to have leaked and spread following the accident.

2.   Fire-fighters quickly extinguished flames that spread following the attack on the building, which was targetted by bazooka fire last year.

3.   Plutonium appears to have spread following an explosion and fire at a Japanese nuclear reprocessing plant northeast of Tokyo earlier this week, a plant official said Saturday.

4.   Plutonium appears to have spread following an explosion and fire at a Japanese nuclear reprocessing plant northeast of Tokyo earlier this week, news reports said Saturday.

5.   The infection spread following the death of a premature baby.