"In the latest communications setback to hit the Russian military, the Security Service of Ukraine (abbreviated as SBU) claims to have captured a hacker who was helping to provide communications services for Russian troops inside Ukrainian territory, VICE reports.

"The SBU shared details in a tweet and Telegram message posted at around 10AM local time (4AM ET), including pictures alleged to show the hacker and their communications system, though the reports have not been independently confirmed.

"According to the SBU’s Telegram post, the hacker was helping to route calls from within Russia to the mobile phones of Russian troops in Ukraine, and also sending text messages to Ukrainian security officers and civil servants proposing they surrender.