The court on Monday gave Meta 24 hours to prove it was complying with an order to treat both campaigns equally, threatening a daily fine of around $200,000 if it didn't.
The legal challenge follows allegations from Lula's camp that Meta, which owns Facebook, WhatsApp and Instagram, was suppressing his online content to boost Bolsonaro. The campaign also alleged inconsistencies in WhatsApp's artificial intelligence tool, saying Lula-related election content was limited while Bolsonaro content was untouched.
President Luiz Inácio Lula da Silva’s campaign will request the disqualification of right-wing rival Flavio Bolsonaro on Tuesday over alleged social media interference from US tech giant Meta as Brazil’s presidential race intensifies ahead of Sunday’s runoff.
The shock result of the first round appears to have invigorated the left, with Lula's camp staging massive rallies ever since and seeking to up its social media game.
Lula is seeking a fourth non-consecutive term in office but is facing stiff competition from his right-wing challenger, the son of jailed ex-leader Jair Bolsonaro.
Flavio Bolsonaro has sworn to liberate his father if elected.