Stupid paragraph

From the SMH today:

An Australian soldier has been wounded by a suicide bomb in Afganistan.

An Afghan national, who was believed to be the suicide bomber, was killed at the scene of the incident.

So the suicide bomber was killed at the scene? How amazing!

I wonder if "suicide bomb" is an expression that would be accepted by my junior school English teachers. Is it a bomb that commits suicide? Given that bombs are meant to explode (which you might view as a form of suicide, even if they are inanimate), does that mean that all bombs, even those dropped from aircraft, are "suicide bombs"? Or are "suicide bombs" only bombs that are being lugged around by homicidal maniacs? It doesn't make sense to me.

If the person carrying the bomb had not been killed in the blast (let's say it was a small bomb attached to their leg, and it just blew a leg off), would they still be called a "suicide bomber", or would they now be called a "disabled bomber".