A magnitude 4.4 earthquake shook the Los Angeles region early Monday afternoon.
The epicenter was near the Highland Park neighborhood, a few miles north of downtown Los Angeles, according to the US Geological Survey.
No injuries were reported and no major infrastructure damage was found, according to the Los Angeles Fire Department.
The Los Angeles Police Department is warning residents to “be prepared for aftershocks” after the “significant” quake.
According to Cal Tech officials, there is less than a 10% chance of an aftershock measuring 5.0 or greater in the next week.
This tremor was preceded by two small earthquakes – magnitude 1.7 and magnitude 1.3 – in the last day, according to the US Geological Survey.
Cal Tech officials said the quake is believed to be along the lower Elysian Park Fault, but a number of faults exist in the area.
The earthquake occurred on the first day of school for students in the Los Angeles Unified School District, the second largest school district in the country.