Multiple brush fires erupted in San Diego’s North County early Tuesday morning, prompting a fast response from firefighters and mandatory evacuations.

Lilac Fire initially started today at 1:19 a.m. in San Diego County. It has burned 85 acres after being active for 19 hours, an increase of 68 acres since the last update. A crew of 66 firefighters succeeded in containing 50% of the fire as of Tuesday evening. Investigations into its cause are still ongoing.