He was behaving erratically and frightening members of the public.
A man was safely arrested by local officers in Worthing town centre on Monday afternoon 14 May, just 14 minutes after police started to get calls about passers-by and drivers about his frightening and erratic behaviour.
Two people are believed to have been slightly hurt.
Calls began to come at 4.35pm about a man running around the town centre including Grafton Road and Portland Square, jumping on cars, threatening people and behaving erratically.
By 4.49pm officers had found and arrested him in Portland Square, using captor spray to help safely restrain him.
Police have seized a penknife but there are no reports of anyone being stabbed.
Chief Inspector Miles Ockwell said; "This was a disturbing incident in which members of the public were frightened, but our officers responded very quickly and resolved the situation without any serious consequences.
Anyone with information about this incident can contact Sussex Police online or by calling 101, quoting serial 859 of 14/05.