An earthquake of about 6.8 magnitude shook central Myanmar on Wednesday afternoon, in a jolt so strong it rattled residents as far away as Bangkok and Kolkota. The quake was reportedly centered about 52 miles below the earth’s surface, making it less likely to cause catastrophic damage. Most information about damage came out of Kolkata, which suspended services, including the underground metro, over fears of aftershocks. At least 20 people were injured in Bangladesh. The shaking was centered about 15 miles away from Chauk, west of Bagan. Police in the area were investigating reports that some famous monuments and temples may have been damaged.