Protests against poor services in Harrismith became violent on Monday and continued overnight and through Tuesday.
Free State Police spokeswoman Brig Motantsi Makhele said the situation in and around the communities of Maluti-a- Phofung and Phumelela were monitored.
Residents protested against a lack of electricity and water as well as against corruption and maladministration.
In sporadic incidents on Monday, the streets were burning in the morning Tires barricaded. In the evening the national roads were targeted and two tuck shops in the village of Makong in QwaQwa were looted.
About 15 people were arrested in the Intabazwe community in Harrismith. The community is adjacent to Harrismith Airfield, where a gasoline bomb was reportedly dropped in a hangar.
Makhele said no case had been opened from the airfield. He said on Monday at 9 p.m. that a person had informed the owner of an aircraft that there was a fire.
Local health and safety training facility Harrismith First Aid Training and Fire said there had been a fire at the airport but they were not sure where it was coming from.
On Tuesday afternoon, the previously closed N3 and N5 streets were open.
“We appeal to road users to exercise caution as the situation may change unexpectedly,” said Makhele.
“Khalanyoni near Harrismith and Tseseng Street in QwaQwa are covered with stones and burning Tires barricaded.
“Memel is witnessing a peaceful march over the provision of services. No incidents have been reported since [Tuesday] morning. Police are deployed in these affected areas to control violent behavior. “
Calls to the airport and the community went unanswered.