At least six men stormed the offices of the Raajje television network in a pre-dawn attack and set fire to equipment after assaulting an unarmed guard.
"All broadcast equipment, transmission equipment, computer systems fully burnt and destroyed," the station said on its Twitter feed.
The Maldivian police force, which has been accused of heavy-handed tactics when dealing with protesters demanding elections in recent weeks, said they were treating the incident as an arson attack.
"Preliminary information revealed that the fire was set after assaulting the expatriate guard there on duty with a sharp object," police said in a statement on their website.
The Maldives has been wracked by occasionally violent protests since September 23 when the Supreme Court suspended a run-off election for which ex-president Mohamed Nasheed was the frontrunner.
The court suspended the vote while it heard a petition into allegations of electoral fraud made by a defeated candidate, businessman Qasim Ibr