U.S. intelligence intensifying focus on possibility that ISIS members try to enter through southern border

Members of the Texas Army National Guard extend razor wire to inhibit migrants from crossing, as seen from Ciudad Juárez. (Credit: Reuters)

U.S. intelligence and security officials are increasing their focus on the country's southern border following the arrest earlier this month of eight men from Tajikistan with possible ties to the Islamic State group, also known as IS or ISIS, a Voice of America report said.

According to the outlet, authorities are concerned that the constant flow of illegal migrants crossing the southern border with Mexico has attracted the attention of the terrorist group as a strategy to enter the U.S.