Despite being urged not to hoard bottled water, residents of Japan's capital on Wednesday snapped it up in droves after testing showed radioactive material in tap water at levels unsafe for infants.

The city's water agency said the spike was likely caused by problems at the Fukushima Daiichi nuclear plant, located 240 kilometers (150 miles) away. Earlier Wednesday, Tokyo government officials advised residents not to give tap water to infants or use it in formula after tests at a purification plant detected high levels of radioactive iodine.

Read the full story "Bottled water scarce after Japan's tap water shown unsafe for infants" on CNN International.