Shocking photos sent to CNN from inside PolyU campus show gas canister covered in bolts. Unclear if the canister has any fuel inside or could be detonated. Police spox told CNN they are aware of gas canisters being used as weapons against them. https://t.co/VRzNn4BMAx pic.twitter.com/0xqUXhO0Gi

— 𝕛𝕒𝕞𝕖𝕤 𝕘𝕣𝕚𝕗𝕗𝕚𝕥𝕙𝕤 🇭🇰🏴󠁧󠁢󠁷󠁬󠁳󠁿 (@jgriffiths) November 18, 2019