Five Just Stop Oil protestors arrested after a performance of Les Miserables in London's West End was halted remain in custody as police appealed for anyone with footage to get in touch.
A video shared by the activist group showed its members storming each end of the Sondheim Theatre's stage and asking the audience to "join the rebellion".
Audience members can be heard booing and telling the activists to "get off".
The performance on Wednesday night did not resume.
The Metropolitan Police later confirmed five people aged 28, 23, 22, 19 and 18 were arrested on suspicion of aggravated trespass.
Audience members will be offered refunds or tickets for another performance.
'Padlocked themselves together'
Catherine Francoise, from Buckinghamshire, was in the audience with a group of more than 30 people who she organises theatre trips for.
She said she had been sitting "in the centre of the front row" and that the protesters from Just Stop Oil were seated at either end of the second row.
Ms Francoise said: "I could see out the corner of my eye something happening on the left, I noticed first, and I knew it wasn't part of the production.
"The cast were still going, the orchestra was still playing, and after about 15 seconds, somebody came on stage and moved the cast off.
"Meanwhile, security were on it trying to get the girls off that were on the left-hand side.
"I thought they had stuck themselves [to the floor], but it turns out they had actually cable-tied themselves together, and then padlocked themselves together, and then padlocked that to part of the scenery."
She said that the cast members were removed from the stage, shortly followed by the orchestra, with the audience being asked to leave about 15 minutes later.
"The audience were definitely making far, far more noise than the protesters," she said.
