The U.S. Geological Survey (USGS) said an earthquake measuring 3.0-magnitude struck central Oklahoma last Saturday just north of Oklahoma City in the Midcontinent.

According to the USGS, the temblor struck at 11:49 pm CT on Saturday. The epicenter was 12 kilometers (7.5 miles) northwest of Edmund at a depth of 5 kilometers (3.1 miles). There were no reports of damage or injuries.

The USGS indicated the last earthquake in Oklahoma to measure 3.0-magnitude or higher was a 3.1 temblor that struck 11 kilometers (6.8 miles) northwest of Edmund at 7:15 p.m. CT on Feb. 28, also at a depth of 5 kilometers (3.1 miles).

Oklahoma regulators have been attempting to mitigate induced seismic activity since 2015. They are focused on wastewater injection wells targeting the Arbuckle formation, especially the Mississippian Lime and the Hunton Dewatering play, within a 15,000-square mile area of interest in the state. No directives were issued following Saturday’s quake.

Data from the Oklahoma Geological Survey shows the number of temblors measuring at least 3.0-magnitude peaked at 901 in 2015, but declined to 619 in 2016 and 302 in 2017. Last year, there were 191 such earthquakes in the state.