After the "red sea" incident at Pantai Batu Hitam, Kuantan was again alarmed over another environmental mystery today when schools of dead fish were discovered in one of its rivers.

PAS Beserah state assemblyperson Andansura Rabu told Malaysiakini this was the first time such an incident had happened at Sungai Tongkek.

"There were thousands of dead fish for a four-kilometre stretch […] from the source of the river all the way to the sea," Andansura said.