European Parliament President Roberta Metsola has sent Elon Musk a letter asking him to testify before the EU legislature, her spokesman said on Monday.
The European Parliament does not have the power to force Musk to appear before it, and his response was not immediately known.
Musk, head of electric car maker Tesla and other companies, has caused upheavals and controversy since he bought Twitter in October for $44bn.
After firing half the company’s staff, reinstating former US president Donald Trump’s account, abandoning a policy against misinformation on Covid-19, banning – and then reinstating – some journalists and briefly blocking references to rival platforms on Twitter, he has attracted the attention of policymakers in both the US and Europe.
The European Commission has warned Musk that he risks EU “sanctions” because of the threat he poses to media freedom.
On Monday, he held a Twitter poll on whether he should stay on as CEO of the company. A total of 57.5% of users said “Yes” to his departure.
Twitter’s share price has plunged by a third since he bought the platform