St. Louis police arrested more than 120 protesters blocking a highway Tuesday night as the city entered its third straight week of protests surrounding a former officer’s acquittal for murder charges.

While police did not release the number of people arrested, a city alderman told reporters that at least 126 had been taken into custody, the St. Louis Post-Dispatch reported. Police warned drivers of the protest at 7:40 p.m. CDT and had cleared the freeway of protesters soon after 8 p.m. Police corralled the group off the road, ordered them to the ground and began systematically handcuffing them and putting them in vans for transport.

Bruce Franks Jr., a Missouri state congressman who has participated in several protests, seems to have been among those arrested.