The earthquake occurred at 17:01 UTC, with its epicenter at a latitude of 45.44 degrees north and a longitude of 16.26 degrees east, and at a depth of 10 km.

There were no immediate reports of casualties or damage from the earthquake.

On 29 December 2020, an earthquake of magnitude 6.4 Mw (6.2 ML) hit the Sisak-Moslavina County, Croatia, with an epicenter 3 km (1.9 mi) west-southwest of Petrinja.

Seven people were confirmed dead, while 26 others were injured, with six having serious injuries. Initial reports show many buildings destroyed in Petrinja. The mayor of Petrinja Darinko Dumbović said that half of the town has been destroyed.