Cuba has arrested four Miami-based exiles on allegations of plotting anti-government attacks. The Cuban Interior Ministry says the suspects were planning violence against military installations with the goal of fomenting anti-government unrest. Cuba also says the four have ties to Luis Posada Carriles, a Cuban exile and former CIA operative behind a 1976 Cubana Airlines bombing that killed 76 people. Carriles currently lives in Miami after beating charges of immigration fraud in 2011. Cuba says it plans to contact the State Department about the new arrests.