Egypt's best-selling author Alaa al-Aswany says authorities have pressured a cultural center to cancel an event where he was scheduled to talk about government manipulation of the public.

Al-Aswany says Sunday the cancellation of his gathering last Thursday in Alexandria follows other measures in the past year, which have prevented him from appearing on TV channels or getting published in Egyptian newspapers.

He says freedom of expression is "at its lowest point, worse than in the days of Hosni Mubarak," the longtime leader overthrown in a popular uprising in 2011.

The Interior Ministry and the cultural center could not immediately be reached for comment.