Yamin Rasheed, chief executive of Raajje TV, said men in masks armed with knives entered the building early in the morning, attacked a guard, broke a door and poured petrol on the station floor.
"Then they set it on fire and escaped," Rasheed told Reuters. "We have one camera left, but we don't even know if it works yet. This is a very sad day for media in the Maldives." Nasheed's Maldivian Democratic Party is holding daily protests against the Supreme Court order to postpone the presidential run-off even though the Election Commission wanted to go ahead with poll as scheduled.
Nasheed, the first democratically elected leader of the Maldives, was forced from office last year in contested circumstances. His supporters say he was ousted in a coup. Police spokesman Hassan Haneef said police were investigating the attack on the television station.
The Maldives held its first free elections in 2008. Nasheed defeated Maumoon Abdul Gayoom, who had ruled for 30 years and was accused by opponents and international human rights groups of running the country as a dictator.
Abdulla Yameen, half-brother of longtime ruler Gayoom, came second in the September 7 vote and was due to go up against Nasheed in the run-off.