The 2002 Bou'in-Zahra earthquake (also known as the 2002 Avaj earthquake or the 2002 Changureh earthquake^[a]) occurred on June 22, 2002 in a region of northwestern Iran which is crossed by several major fault lines. The earthquake's epicenter was near the city^[b] of Bou'in-Zahra^[c] in Qazvin Province, an area known for destructive earthquakes. Measuring 6.5 on the Richter scale and 6.3 on the moment magnitude scale, the earthquake killed at least 261 people and injured 1,500 more.