Ukrtelecom announced today that the company’s offices in Crimea have been seized in several locations, cutting phone and Internet service between the Crimean peninsula and the rest of Ukraine. However, service was restored after a few hours, according to people in Crimea.

“As a result of unknown actions there has been physical damage to several fiber optic transmission cables of the company,” Ukrtelecom said in a statement. As a consequence, fixed telephone, mobile phone and internet service has been disrupted.