Police found graffiti on the mosque's driveway that referenced the Christchurch mosque shootings in New Zealand, leading them to consider the fire a terrorist attack. For over a month no suspect was identified. Then, on April 27, John T. Earnest entered the nearby Chabad of Poway synagogue and opened fire, killing one and injuring three others. An online posting from Earnest admitted responsibility for the mosque arson. No one was injured in the fire, and it was put out before extensive damage occurred.