This is reported by RIA Novosti with reference to Twitter of the deceased writer.

“With a heavy heartache, we announce that Erik Karl, author and illustrator of The Very Hungry Caterpillar and many other beloved and classic works, has passed away on the 23rd at the age of 91,” wrote Karl's team.

Earlier it was reported that the writer, translator, author of children's detective stories Catherine Vilmont died at the age of 76.