CUSHING, Okla. (AP) — Dozens of buildings sustained “substantial damage” after a 5.0 magnitude earthquake struck an Oklahoma town that’s home to one of the world’s key oil hubs, but officials said Monday that no damage has been reported at the oil terminal.

Cushing City Manager Steve Spears said 40 to 50 buildings were damaged in Sunday’s earthquake, which was the third in Oklahoma this year with a magnitude of 5.0 or greater. No major injuries have been reported, and Spears said the damage included cracks to buildings and fallen bricks and facades.

Oklahoma has had thousands of earthquakes in recent years, with nearly all traced to the underground injection of wastewater left over from oil and gas production. Sunday’s quake was centered 1 mile west of Cushing and about 25 miles south of where a magnitude 4.3 quake forced a shutdown of several wells last week.

Fearing aftershocks, police cordoned off older parts of the city about 50 miles northeast of Oklahoma City to keep gawkers away late Sunday, and geologists confirmed that several small quakes have rumbled the area. Spears said an assisted living community had been evacuated after damage was reported. The Cushing Public School District canceled Monday classes.