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FERGUSON, MO (KTVI)- A renewed round of unrest sparked in Ferguson overnight. Demonstrators clashed with police, a business was broken into and another store caught on fire.

The unrest began around 9p.m. Tuesday night and lasted into the early morning hours.

Beauty Town on West Florissant Avenue was broken into and demonstrators who support Michael Brown started gathering shortly afterward.

Windows were also shattered at that business. According to the owner, vandals tried to take the cash register but they ran away when police arrived.

The scene became intense around 11:30 p.m. when a group of about 100 to 150 demonstrators gathered in the road. Once police attempted to clear the crowd, rocks were allegedly thrown at them.

At that point, officers rushed into the crowd pushing them demonstrators from West Florissant onto Canfield Drive.

There was a heavy police presence including Captain Ron Johnson from the Missouri Highway Patrol, St. Louis County Police Chief John Belmar and St. Louis City Police Chief Sam Dotson.

There was also a report of shots fired in the area during the confrontation but no one seriously hurt.

Police shut down West Florissant Avenue but it has since reopened.

Another incident was reported around 11:30 p.m. in Ferguson where fire crews responded to a fire at the Whistle Stop and Depot Museum on South Florissant Road. There was damage to the outside of the building.

According to our partners at the Post-Dispatch, there was a strong smell of gasoline at the building.

Investigators believe the blaze may have been intentionally set.