SAO PAULO (AP) — Indigenous groups have clashed with congressional police officers at a public hearing in Brazil's capital on agricultural projects on indigenous lands.

The lower house Chamber of Deputies said in a statement the clash broke out Wednesday when some indigenous people were barred from entering the room where the audience was being held because of limited space.

Video footage posted by the G1 news portal showed protesters smashing glass doors and windows with rocks and pieces of wood. Police used tear gas and pepper spray to disperse the crowd of about 100 protesters.

The Indigenous Missionary Council, a rights group linked to the Catholic Church, said four members of the indigenous groups were taken into custody,

There were no reports of injuries.