Gambling a concern for Ghana's Chinese investors

Chinese investment in countries like Ghana has mostly been welcome. But there's one trend which is proving controversial. Slot machines have become very popular in rural parts of northern Ghana. They're Chinese made, very basic but also very popular in the West African country. And now there are concerns about school children in particular becoming addicted to this form of gambling. It's a quick way to make money but the authorities are struggling to deal with the problem. The BBC's Thomas Naadi reports from Salaga, in northern Ghana: