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OTSUCHI, Japan 鈥 Japan has deployed 1,400 firefighters and 100 Self-Defense Force personnel to battle mountain blazes in the northern part of the country, with the fires, now burning on Sunday for a fifth straight day, continuing to threaten a picturesque coastal town.

The area consumed by the fires reached 1,373 hectares (3,393 acres) as of early Sunday morning, up 7% from a day earlier.

The fires threaten residential districts of Otsuchi on the Pacific Coast 鈥 a town that lost nearly a tenth of its population in one of Japan鈥檚 worst disasters, the March 2011 earthquake and tsunami.

Evacuation orders are in place for 1,541 households or 3,233 residents, roughly a third of Otsuchi鈥檚 population.

鈥淎lthough the Self-Defense Forces are fighting the fires from the sky (with helicopters), the dry weather and winds are helping the fires expand,鈥 Otsuchi Mayor Kozo Hirano told a press conference.

One Otsuchi resident said he was worried about the damage the wildfire could inflict.

鈥淎 fire burns everything down. With a tsunami, you might have something left after the destruction,鈥 Yoshinori Komatsu, 74, said as he watched Self-Defense Force helicopters dump water over fires in the distance.

The only casualty to date has been one minor injury suffered when a person fell at an evacuation center, Japan鈥檚 Fire and Disaster Management Agency said on its website.

No rain is expected in the region on Sunday or Monday, but a brief shower is forecast on Tuesday, according to the Japan Meteorological Agency.

The cause of the fires is unclear and under investigation. 鈥 Reuters