A large-scale Ukrainian drone attack on Russia triggered an earthquake-sized blast at a major arsenal in the Tver region on Wednesday, forcing the evacuation of a nearby town, war bloggers and some media reported.

Ukraine has repeatedly targeted border regions such as Bryansk, Kursk and Belgorod. The attack on Tver, about 500 kilometers from the border, is not as common, but is an example of what Ukrainian officials have repeatedly said they want to do in order to hit Russian military infrastructure that could be used to attack Ukraine.

A Ukrainian drone attack caused a massive explosion at a major arsenal in Russia's Tver region, leading to the evacuation of a nearby town. NASA satellites detected intense heat, and earthquake sensors recorded the blast.

NASA satellites picked up intense heat sources emanating from an area of about 14 square kilometres (5 square miles) at the site in the early hours and earthquake monitoring stations picked up what sensors thought was a small earthquake,

Ukrainian drone attack on Russian arsenal triggers explosions, fire, and evacuation. US defense stocks react to reports.

STORY: A Ukrainian drone strike destroyed a Russian weapons warehouse in the Tver region, a source in Ukraine's SBU state security service told Reuters on Wednesday.This unverified footage shows a huge ball of flames blasting into the sky and multiple detonations.

Ukraine destroys Russian arsenal, Poltava attack kills dozens, Russia nears rail hub. Washington considers authorizing long-range strikes.