Free expression and press freedom in Mexico have again taken several hits in recent days. Last week, two Twitter users were sent to jail in Veracruz, the southern state which has seen a rise in drug-related violence thanks to the Zetas Cartel and its confrontations with anti-drug units of the Mexican Navy.

Gilberto Martínez Vera and María de Jesús Bravo Pagola were sentenced to jail for having tweeted warnings about impending drug gang violence around several public schools. Tweeps using the hashtag #verfollow continue to complain about the jail terms and attacks against freedom of expression.

On the same day, the congress of the southeastern state of Tabasco approved a law punishing those who disseminate false alarms via phone calls or social networks. The crime carries a possible sentence of up to six years in prison.

The nerves of Mexican journalists have also been frazzled by the murder last week of two female  journalists, Ana María Marcela Yarce Viveros and Rocío González Trápaga, who were found strangled in a park in Mexico City. Until now, violence against the press in Mexico has spared the capital, Yarce Viveros worked for Contralinea, an online investigative journalism site, and Gonzalez Trapaga, who worked for Televisa a one point, was at the time an owner of a currency exchange centre at Mexico City’s international airport. Investigators have suggested the motive for their murders was not journalism related.