Tokyo: A magnitude 7.8 earthquake has struck 194 kilometres off Japan’s coast, according to United States Geological Survey (USGS).The quake, which hit off Japan’s Bonin Islands, reportedly rocked buildings in Tokyo as it built in intensity about 8:30pm local time (9:30pm AEST). The USGS reported the epicentre was approximately 874 kilometres south of Tokyo in the Pacific Ocean. According to initial reports, in India, light tremors jolted Delhi-NCR region at around 5:30 pm on Saturday. No casualties have been recorded yet.Neither a tsunami alert has been imposed at the island. The Japan Meteorological Agency said the earthquake had a magnitude of 8.5 at a depth of 590 kilometres.