Thrissur: Pumping of drinking water from the Kerala Water Authority’s reservoirs at Arimbur and Olari in Thrissur district was stopped early on Friday morning following receipt of message that poison had been mixed in the water tank.

Police said that they had received a message from the Arimbur Panchayat Standing Committee Chairman, A L Jose that he had a telephone message at about 2000 hours yesterday that poison had been mixed in the Arimbur water tank.

Police immediately informed the KWA to stop pumping.

Water samples from the tank have been taken for inspection.