Brazil said it was sending armed forces to keep order near the Venezuelan border area, while Peru declared a health emergency, as a regional crisis sparked by thousands of Venezuelans fleeing economic collapse escalated Tuesday.

In Brazil, where residents rioted and attacked Venezuelan immigrants in a border town earlier this month, President Michel Temer signed a decree to deploy the armed forces to the border state of Roraima. He said the move was aimed at keeping order and ensuring the safety of immigrants.

Peru, meanwhile, declared a 60-day health emergency in two provinces on its northern border, citing "imminent danger" to health and sanitation. The decree, published in the government's official gazette, did not give more details on the risks, but health authorities have previously expressed concerns about the spread of diseases such as measles and malaria from migrants.