By Lizbeth Diaz
MEXICO CITY (Reuters) - The United Nations and rights groups have urged an investigation into the use of guns by police in the Mexican city of Cancun this week to disperse a feminist protest over the death of a young woman.
Footage apparently taken by a protester of Monday night's protest in the tourist hot spot was widely shared on social media. The video shows a group of demonstrators trying to tear down plywood at the entrance of an office building before volleys of semi-automatic gunfire send them running for cover.
Reuters spoke to a journalist who was at the protest who described scenes similar to those shown in the video.
Cancun police declined to comment when asked about the use of guns at the protest.
At least two reporters were injured during the protests, said Mexico's Human Rights Commission. It did not say if the injuries were related to the gunshots.
The commission called for a "prompt" investigation and urged the government not to allow the use of live rounds by police at protests.
It was not immediately clear if the gunshots during the protest were live fire, rubber bullets or blanks.
Cancun police chief Eduardo Santamaria was sacked on Tuesday, the city's mayor said on Twitter.
The chief of Quintana Roo state police, Alberto Capella, initially said his officers were not involved in what he described as a "shameful" use of force that would be investigated. Cancun is in Quintana Roo.
Later, state governor Carlos Joaquin said that Capella had asked to resign and he had accepted. Capella could not immediately be reached for comment.
The Mexico office of the U.N. High Commissioner for Human Rights condemned what it termed "excessive use of force" at the protests and urged an independent investigation.
The interior ministry has also called for an investigation into the "repression and armed aggression."
The protest was sparked by the death of Bianca "Alexis" Lorenzana, 20, whose body was found mutilated in Cancun over the weekend "with clear traces of violence," according to media.
A protest movement in Mexico demanding more action against the murder of women has been gaining momentum in recent months, with demonstrators taking over buildings and sometimes clashing with police.
Selene Hidrogo, a journalist covering Monday's protest for outlet Sipse TVCUN, said the police appeared to target reporters.
"They hit me on the right hand and broke my cellphone," Hidrogo told Reuters. "The aggression was directly against us, against journalists who were broadcasting the demonstration live."
Cancun police did not immediately respond to a request for comment about Hidrogo's allegation.
(Reporting by Lizbeth Diaz; Additional reporting by Diego Ore; Writing by Drazen Jorgic; Editing by Frank Jack Daniel, Robert Birsel)