About 3,000 people in a city of southwestern Japanese island of Kyushu were forced to evacuate their homes again on Thursday due to threats of landslide and flood caused by heavy rain, local press reported.

According to Japan's public broadcaster NHK, the residents in Aso City where landslides hit houses last week were ordered to evacuate their houses on Thursday morning as heavy rain continued to fall on the area covered with volcanic ash soil which is very fragile.

In Aso City and its surrounding region of Kumamoto Prefecture, at least 23 people were found dead and two went missing after landslides hit houses last week in more than 60 places.

Heavy rain caused by Tropical Storm Khanun poured in several areas of northern Kyushu which saw hourly rainfall between 40 and 50 mm in the morning hours.

The Japan Meteorological agency warned as the tropical storm moves north, heavy rainfall may trigger further floods and landslides in Kyushu till Friday.