BRATISLAVA, Slovakia (AP) — Slovak firefighters say five people, including four children, have been killed in a house fire in eastern Slovakia.

They say in a statement the blaze broke out around 3 a.m. (0200 GMT) on Friday in a four-room house in the town of Richnava.

Officials say the children ranged in age from 5 to 9, and one 28-year-old died as well.

Richnava Mayor Ivan Dunka told local media that a mother and her four children lived there.

Authorities are investigating the cause of the fire.