Sept 8 (Reuters) - Indian Prime Minister Narendra Modi said on Tuesday that Unified Payments Interface, the country's homegrown retail payment network, should aim to integrate with payment systems of more countries.

India is witnessing an unprecedented food safety crackdown, with regulators forcing many local eateries and branded restaurants to suspend operations, while a push for front-of-pack warning labels has rattled the country's more than $100 billion packaged food industry.