South Texas is seeing a rise in children from Central America who have slipped across the border unaccompanied into the US from Mexico after that country began deporting fewer kids who arrived without visas, some experts say.

The influx across the US border is causing a political outcry in the state, where the federal government has set up five temporary shelters to deal with the growing numbers of young immigrants.

From October to the end of April, the US government has detained more than 6,500 unaccompanied minors who had crossed the border, nearly double the number detained in the comparable period the previous year, according to US officials