Drain cleaned after fish deaths in Spalding
The Environment Agency is working to improve water quality in a Lincolnshire drain after hundreds of fish died.
The fish died between Sunday and Monday in a stretch of Vernatts Drain, near Pode Hole in Spalding.
Environment officers said the warm weather which cooled quickly on Sunday night caused a drop in oxygen levels in the water.
Work is being carried out to pump fresh water into the drain and increase the oxygen.
Environment officer Adam Shamma said: "We urge anyone who sees fish in a distressed state - for example gasping at the water surface, or trapped in shallow water pools - to contact us.
"This will enable us to act quickly to minimise the impact on the river's fish population."