An eagle eyed resident of La Manga spied someone on the beach passing a package to someone else and reported it .
The tourist from Madrid was found to be in possession of hashish . He was on the beach with his wife and young family .
He claimed to the police that he had found the drugs on the beach .
The police took him to the hole where the exchange had taken place and recovered another block of hashish which he had been seen leaving there .
The man was arrested and handed over to the Guardia Civil