Ride-sharing company Uber fears an attack on two drivers in Brisbane could be part of an intimidation campaign against its operations.

The drivers were attacked by a group of men as they sat in their cars in Fortitude Valley and Kangaroo Point early on Monday morning.

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Both drivers were punched and their cars damaged, while one had his mobile phone stolen.

Queensland police say the attacking group, who haven’t been found, also targeted a third motorist who didn’t work for Uber.

Uber is “very concerned” about the attacks, adding the safety of its drivers and passengers was a priority.

“The taxi lobby and its associates have long used fear, misinformation and intimidation in its campaign against ride-sharing and it would be a very worrying turn of events if these alleged assaults happened as a result of this campaign,” a spokesman said in a statement.

“We call on Taxi Council Queensland to condemn this type of behaviour immediately.”

The Taxi Council of Queensland was expected to issue a statement, although this is now believed to have been deferred.