Sorting fact, disinformation after Russian attack on Ukraine

KYIV, Ukraine (AP) — Associated Press journalists are documenting military activity across Ukraine, where disinformation is spiking during a Russian ground and air offensive. With social media amplifying a torrent of military claims and counter-claims, determining exactly what is happening can difficult. Here's a look at some of what can be confirmed.

Activity with direct witnesses:

— Russian military vehicles crossing from Belarus into Ukraine at the Senkovka crossing point in the Chernihiv region

— Russian military vehicles crossing a bridge near Tavriysk and Novaya Kakhovka in the southern Kherson region, and Russian military helicopters flying over the area

— Security camera footage showing Russian military vehicles crossing from Crimea into government-held territory at Armyansk checkpoint

— Explosions around Kyiv, and their aftermath

— Helicopters flying over Kyiv, believed to be Russian

— Fire near the headquarters of the Ukrainian intelligence agency

— Explosions in Dnipro in eastern Ukraine

— Explosions near an airfield and bomb depot in Myrhorod in eastern Ukraine, including sounds of shelling.

— Aftermath of explosions in Mariupol, strategic city of Azov Sea near Russian border

— An exploded shell inside an apartment building in the eastern city of Kharkiv; a resident described the blast and said a neighbor was injured in the leg and taken away by an ambulance

— Just outside the separatist-held areas, in Bakhmut, military officers stationed on the road and crowds lining up at gas stations and banks to prepare to flee

— In Sievierodonetsk, families hiding in a bomb shelter after reports of two explosions

Announced by Ukrainian and Russian authorities:

— Fighting in Hostomel, seven kilometers (4 miles) from...