Supt Kevin Purcell, of West Mercia Police has said four children were playing near the lock, but two fell in and another then went to try and get them out, while the fourth ran home to raise the alarm.
This video shows the canal where three children entered the water. Police say they are 'working hard to establish exactly how Imie came to be in the water'.
More top news
A minute's silence will be observed at 11am today to remember those who lost their lives in the Manchester Arena attack.
There are extra officers out on patrol in Warwickshire after the arrest of a man in Nuneaton in connection with the attack in Manchester.
Another warm day with patchy cloud and sunny spells.