In the latest clash between a US internet company and Brazilian law enforcement authorities, police in Sao Paulo have detained the regional vice-president of Facebook for failing to provide information requested by a criminal investigation.Diego Dzodan was taken into custody at Garulhos airport on Tuesday and is now being questioned about Facebook subsidiary WhatsApp’s alleged non-compliance with a court order.According to the court, WhatsApp had been ordered for more than a month to reveal messages relating to a suspected drug-trafficking ring. After the company denied three related requests by federal police, the judge first imposed a daily fine on the US company of 50,000 reais (£9,000), then a daily penalty of 1m reais (£180,000), and finally ordered the arrest.“In the face of repeated non-compliance, the judge Marcel Maia ordered the arrest of a representative of the company in Brazil, Mr Diego Dzodan for obstructing the police investigation,” a court spokesman wrote in an email.Facebook called the police action “extreme and disproportionate”.It says WhatsApp – which was acquired by Facebook in 2014 and has no staff based in Brazil – operates independently so Dzodan should not be held responsible. Moreover, it notes that the WhatsApp messaging service does not store content, which is encrypted by users at either end. The courts, it says, are requesting information it does not have.This is different from information found on the Facebook social network, which is archived and can be provided on a case-by-case basis if requested by Brazilian law enforcement officers and approved by the company’s lawyers.“Facebook has always been and will be available to address any questions Brazilian authorities may have,” a company spokesman said.This is not the first controversy regarding WhatsApp, which has been the most popular download in Brazil over the past two years and is used by about half of the 200 million population. In a separate case in December, a court issued an injunction for WhatsApp to be shut down for 48 hours for twice failing to comply with its orders.That injunction was overturned after an outcry by users and an intervention by Facebook’s chief executive, Mark Zuckerberg, who described the shutdown as “a sad day for Brazil”.