People in some areas affected by the magnitude-6.6 quake that hit Gansu province on Monday are still facing a shortage of relief supplies, a charity coordinator said on Thursday.

"Though conditions in the worst-hit areas are getting better, incomplete information has led to an unbalanced distribution of tents, food and other necessities for less-affected places," said Meng Lin, coordinator of the Gansu Disaster Relief Initiative, a joint effort by 27 charities and social organizations in the province.

Meng said authorities and charities should switch part of their attention to those areas still lacking food and shelter.