Two people jailed for making “alarmist” posts on Twitter were freed yesterday after four weeks in prison in Mexico. Maria de Jesus Bravo, a local journalist, and maths teacher Gilberto Martinez Vera, had the charges of terrorism and sabotage against them dropped, and they walked free from jail to cheering supporters. The pair sent out Twitter messages regarding an unconfirmed drug attack on a primary school last month, and were accused of terrifying frantic parents. The charges, which can carry prison sentences of up to 30 years imprisonment, were dropped following outrage from human rights activists and free speech advocates.