KUALA LUMPUR, Feb. 2 (Xinhua) -- Flooding in Malaysia's northern Borneo states of Sarawak and Sabah worsened on Sunday with over 13,000 people displaced, according to local authorities.

In Sarawak, 11,840 evacuees were housed in 63 flood relief centers, while Sabah reported 1,453 evacuees as of 4 p.m. local time, according to the country's social welfare department.

Meanwhile, Deputy Prime Minister Fadillah Yusof urged those affected to register their names to receive aid, adding that tackling the disaster this time is quite challenging, especially the floods in Bintulu district, due to logistical difficulties and limited personnel.

The meteorological department has issued warnings of continuous heavy rain until at least Feb. 4, particularly in several districts in Sarawak. ■