At least one room and three shelters came under fire on Sunday morning in Wau, Western Bahr El Ghazal State.
The youth of Hai Jebel residential area managed to rescue the situation, Radio Voice of Hope reports.
Jibril Abu baker, one of the eyewitnesses who participated in rescuing the situation, says suspected street children set fire on a grass near the house.
The grasses around the house contributed to quick spread of fire, says Abu baker.
Last Friday, an eye witness confirmed that other suspected street children set a fire on the nearby grasses which burned more than 300 water pipe at Hai Darajat in Wau.