_ Eastern Congo was struck by a magnitude 5.4 earthquake early Thursday, the U.S. Geological Survey said. No casualties were immediately reported. The quake struck about 25 kilometers (15 miles) north of the city of Bukavu, which is perched on Lake Kivu. No other details were available, AP reported. On Feb. 3, two earthquakes struck hours apart in the same region, killing at least 39 people and injuring at more than 400 more in Congo and neighboring Rwanda. Those quakes registered magnitudes of 6.0 and 5.0. The area where the quakes hit is part of Africa's Great Rift Valley, which includes a seismically active fault line.