Sri Lanka, Jan. 19 -- Iran may lift its internet blackout in a few days, a senior parliament member said on Monday, after authorities shut communications while they used massive force to crush protests in the worst domestic unrest since the 1979 Islamic Revolution.

In the latest sign of weakness in the authorities' control, state television appeared to be hacked late on Sunday, briefly showing speeches by U.S. President Donald Trump and the exiled son of Iran's last shah calling on the public to revolt.

Iran's streets have largely been quiet for a week, authorities and social media posts indicated, since anti-government protests that began in late December were put down in three days of mass violence.

An Iranian official told Reuters o...