Marina Ovsyannikova, an
editor at state-controlled Channel 1, was detained after she ran on to the set
on Monday holding a sign saying "no war".
She said she had been
questioned for 14 hours and not slept for two days, and was not given access to
legal help.
The 30,000 rouble (£214;
$280) fine relates to her video message.
In the video, she called on
the Russian people to protest against the war, saying only they have the power
to "stop all this madness".
"Don't be afraid of
anything. They can't imprison us all," she said.
After the court hearing, Ms
Ovsyannikova told reporters that she needed to rest after two days without
sleep.
She stressed that she came
up with the idea of the protest alone.
"It was my anti-war
decision. I made this decision by myself because I don't like Russia starting
this invasion. It was really terrible," she said in English as she left
the courthouse.
Images of Ms Ovsyannikova's
protest were quickly shared across the world after she ran on to the set of one
of Russia's most-watched news programs, Vremya, holding a sign reading "No
war, stop the war, don't believe the propaganda, they are lying to you here."
She could also be heard
repeating the words "no war, stop the war".
The placard was clearly
visible for a few seconds before the program cut away from the live broadcast
to a pre-recorded report.
Before the incident she
recorded a video in which she said she was ashamed to work for what she called
Kremlin propaganda.
"I'm ashamed that I
allowed myself to tell lies from the television screen. Ashamed that I allowed
Russians to be turned into zombies," she explained. "We just silently
watched this inhumane regime."
Ms Ovsyannikova, whose father was Ukrainian, said the whole world had turned against Russia.
"The next 10
generations won't be able to clean themselves from the shame of this
fratricidal war."
Her colleagues at Channel 1 were reportedly surprised by her actions. One of them said that Ms Ovsyannikova, who has two children, had never discussed politics, but spoke "mostly about children, dogs and the house".
From BBC (edited)