noxious substance

Kwan had admitted administering a noxious substance to Mr O'Hara, 71, but initially claimed he only wanted to cause "pain and discomfort", the trial had heard.

He also denies wounding with intent but has admitted administering a noxious substance.

A 73-year-old woman has been released after being arrested on suspicion of administering an unknown noxious substance.

A 73-year-old woman has been arrested on suspicion of administering an unknown noxious substance, following an incident that left a woman in hospital.

A man is in hospital after being attacked with a noxious substance.