A baby boy from the U.K. was burned on over 40 percent of his tiny body while his mother sunbathed beside him, The Sun reported.

Shocked beachgoers called police in Brighton, England and the 5-month-old boy was rushed to a nearby hospital.

"The baby was clearly very sunburned,” Alex Coulson, who tried to warn the mother, told the newspaper. “He was naked and very, very red and I was concerned enough to walk up to her. I pointed to blisters that were forming on the boy's leg and was saying, 'sunburn, sunburn' — but she didn't get it.”

It had been one of the hottest days of the year with temperatures hitting 77-degrees.

"His condition is stable and his mother is with him,” a hospital spokeswoman said.

The 29-year-old mom could face charges of neglect.

"No arrests have been made but the matter has been passed to colleagues who will check to ensure there are no child protection issues," a Sussex Police spokesman said.

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