Media playback is unsupported on your device Media caption Watch: A man interrupts the UK's Eurovision entry in Lisbon

The Eurovision Song Contest stage invader gained access to the stage by climbing into a camera run and going over a bridge, organisers have said.

The man interrupted the UK's singer SuRie, who finished third from bottom at the event in Lisbon on Saturday.

The European Broadcasting Union said an internal investigation was under way.

The EBU said he was pursued by security over the bridge, adding: "He was removed off stage after seven seconds and is being questioned by police."

The statement continued: "We take security very seriously and an investigation into what happened is already under way."

Image copyright EPA Image caption The stage invader took the microphone off SuRie, before being dragged off stage

SuRie was singing her song Storm when a man with a rucksack ran onto the stage, grabbed her microphone, and appeared to say: "Nazis of the UK media, we demand freedom."

He was swiftly dragged off stage and SuRie continued performing the song.

Media playback is unsupported on your device Media caption 'We all felt so sorry for SuRie'

It is thought the same man invaded the stage at the National Television Awards this year, and The Voice in 2017.

More on Eurovision:

SuRie was given the chance to perform again, but declined. The BBC said: "SuRie and her team are extremely proud of her performance and have together decided that there is absolutely no reason to perform the song again."

She later wrote on Twitter: "Well, I've always said anything can happen at Eurovision..."

On Sunday, she wrote: "I've been told the security agent who intervened last night is ok and thank goodness for that.

"Thank you everybody for your messages of love and support and huge congrats to @NettaBarzilai, I'm so, so proud of you x"

Skip Twitter post 2 by @surieofficial I've been told the security agent who intervened last night is ok and thank goodness for that. Thank you everybody for your messages of love and support and huge congrats to @NettaBarzilai, I'm so, so proud of you x — SuRie (@surieofficial) May 13, 2018 Report

Netta, representing Israel, won the contest with 520 points, triggering jubilation in her home country.

Media playback is unsupported on your device Media caption Eurovision Song Contest 2018 highlights

Crowds celebrated in Tel Aviv's Rabin Square and Jerusalem's main open air market.

Israeli Prime Minister Benjamin Netanyahu even imitated Netta's now-famous chicken dance in his own tribute to the winner, and confirmed that next year's contest would be held in Jerusalem.

Follow us on Facebook, on Twitter @BBCNewsEnts, or on Instagram at bbcnewsents. If you have a story suggestion email entertainment.news@bbc.co.uk.