Police said a 6-year-old boy in critical condition after falling into a frozen lake in central England on Sunday lost the battle for his life.

Three other boys, aged 11, 10 and eight, were pulled from the icy waters of Babs Mill Lake in Solihull, near Birmingham, on Sunday afternoon and found shortly thereafter.

The UK was swept by a wave of cold, and snow covered most of the country on the night from Sunday to Monday. On Sunday night, the temperature was the lowest on record this year.

“It is with great sadness that we announce that a 6-year-old boy who was in hospital passed away this afternoon,” the West Midlands Police said in a Twitter post.

Officers continued to search the lake after unconfirmed reports surfaced that other children may have fallen as the ice broke. But today they announced that this investigation is over.

^{According to REUTERS, AFP, APE-MPE}