RIYADH: Saudi authorities have seized 765,000 amphetamine tablets hidden in a watermelon shipment in Riyadh. Five people – two citizens and three Syrians – were arrested in the security operation and have been referred to relevant authorities for further action, the Saudi Press Agency (SPA) reported. Saudi Arabia has intensified its crackdown on drug smuggling networks. Recently, authorities carried out a major security operation to thwart the smuggling of about 47 million amphetamine tablets, with a street value of up to $1 billion, in what was described as the Kingdom’s biggest drug bust ever.