Thousands of protesters gathered on Thursday in Mexico City to blockade Mexico's largest television station, Televisa, over accusations of corruption and biased news coverage surrounding the country's July 1st presidential elections.

Protesters, including student groups and unions, blockaded Televisa's offices in Mexico City, preventing employees from entering.

Protesters chanted "tell the truth," urging Televisa to come clean over allegations that the network blatantly supported now president Enrique Pena Nieto in coverage leading up to the elections. A report from the Guardian in June revealed widespread corruption at the station including evidence suggesting that a secret unit inside Televisa had been assigned to run a covert campaign for Nieto in exchange for money.

Thursday's protest comes on the heels of a massive student movement, which broke out this year in protest of Nieto's candidacy and what the students saw as biased news coverage. The movement labeled #YoSoy132, or 'I am 132', found widespread success through online sources such as YouTube.

Losing leftist candidate Andres Manuel Lopez Obrador maintains that Nieto bought votes in addition to the favorable coverage. Obrador has filed a legal challenge to the vote with an electoral tribunal.

The protesters pledge to continue Thursday's blockade for 24 hours.