The Iranian government has been developing its own network to function in place of the internet for a while. This network, controlled by the Iranian authorities, was already used by government agencies and is now beginning to be used by citizens.
One of the first actions of the new Iranian network was to block access to Google searches and Gmail. The Iranian government expects all citizens of the country to be connected to a new network by next year, according to the ZDNet.
It is not yet known whether Iran intends to completely disconnect the access of its citizens to the Internet when its own network is ready.
The Iranian government recently said it would shut down government web services to prevent sensitive data from being stolen.