FIVE people, including two young girls, have been pepper-sprayed during clashes between supporters and opponents of Donald Trump.
The clashes took place outside Anaheim City Hall, where police said about 50 people confronted each other including one man who used the spray on a crowd of Trump supporters.
Police Sergeant Daron Wyatt said five people, including an 11 and eight-year-old girl, were exposed to the eye-stinging spray. Three were treated at the scene by paramedics.
Police are searching for the man who fled the scene.
The confrontation occurred before the City Council was to discuss a proposed resolution to condemn what it calls Mr Trump's divisive rhetoric.
No serious injuries or arrests were reported following the incident.
Donald Trump later said the race for the Republican presidential nomination was "over" after romping to victory in five state primaries.
Mr Trump declared himself the Republican's "presumptive nominee" after winning the party's primaries in Pennsylvania, Maryland, Connecticut, Rhode Island and Delaware.
Meanwhile, Hillary Clinton was dominant in four Democratic races, losing just Rhode Island to her rival Bernie Sanders.
Mr Trump's victories have boosted his delegate total as he aims to reach the 1,237 needed to clinch his party's presidential nomination.