In late May and early June 2020, two ambush-style attacks occurred against security personnel and law enforcement officers in California. The attacks left two dead and injured three others. The attacks began on May 29, when a drive-by shooting occurred in front of a federal courthouse in Oakland, resulting in the death of a security officer contracted with the Federal Protective Service. Over a week later on June 6, Santa Cruz County sheriff's deputies were shot at and also attacked with improvised explosive devices; one of them died as a result.