His malicious gossip caused much mischief until the truth became known.

蜚语危害很大，事后才真相大白。

youdao

Recorded cases of vandalism, including fire-raising and malicious mischief, fell by 12% to 82, 020.

BBC: Kenny MacAskill MSP speaks to a policeman

Reports say Pope was facing charges of malicious mischief filed by his neighbours.

BBC: Canadian 'opens fire' in Philippine court

He was admonished on a charge of malicious mischief after his lawyer claimed the fire in May 2008 was down to "crass stupidity".

BBC: Glasgow & West Scotland