HARARE (Reuters) - President Robert Mugabe warned protesters on Friday that there would be no "Arab Spring" in Zimbabwe after anti-government demonstrations descended it to some of the worst violence seen in the southern African nation for two decades.

Zimbabwean police fired tear gas and water cannon at opposition leaders and hundreds of demonstrators at a protest against Mugabe and the ruling ZANU-PF in the capital Harare on Friday.

(Reporting by Macdonald Dzirutwe; Writing by Joe Brock)