Kremlin system 'blocking GPS in central Moscow'
Joggers, taxi drivers, Pokemon Go players and senior Russian officials are seeking answers as to why mobile phone apps that use GPS are malfunctioning in central Moscow.
A programmer for Russian internet firm Yandex, Grigory Bakunov, said his research showed a system for blocking GPS was operating from the Kremlin, the heavily guarded official residence of president Vladimir Putin.
People have complained on social media that when they are near the Kremlin their GPS-powered apps show them to be in Vnukovo Airport, 18 miles away.
Mr Putin's spokesman Dmitry Peskov said he did not know why the malfunction was occurring but he had experienced the problem himself.
A spokesman for Russia's Federal Guards Service, which protects the Kremlin, declined to comment.