The attacker detonated his vest and blew himself up.
Tips
usage
Two registers: literal (military / news) and figurative (entertainment slang for celebrity confessions, like ages, relationships, embarrassing stories). Context - guns vs. gossip - disambiguates.
memory
自 self + 爆 explode/blow up. The 'leak info' sense extends 'blow up' the way English uses 'spill the beans'.
