Tokyo, July 30 -- Japan on Wednesday issued a tsunami warning for the country's Pacific coast after a magnitude 8.8 earthquake struck off Russia's Kamchatka Peninsula, with waves of up to 50 centimeters recorded in parts of northern and eastern Japan, Kyodo News reported.

The warning disrupted railway and air services along the coast and led the operator of the crippled Fukushima Daiichi nuclear power plant to halt the release of treated radioactive water into the Pacific Ocean, as per Kyodo News.

The Japan Meteorological Agency warned of tsunami waves of up to 3 meters reaching areas stretching from Hokkaido in northern Japan to Wakayama Prefecture in the west and the Ogasawara Islands in the south. The warning could remain in effect f...