This September 29, 2014 file photo shows the Russian tanker Nika Spirit, formerly named Neyma. The tanker was seized by the Ukrainian Security Service in the port of Izmail on July 25, 2019. (Photo: VCG)

A Ukrainian court Tuesday formally approved the seizure of a Russian tanker detained by Ukrainian authorities at the Danube river port of Izmail last week, Ukrainian Chief Military Prosecutor Anatoliy Matios said.