Police in Mexico say they have filed charges against a group of four people, including a Canadian woman, who allegedly plotted to smuggle Moammar Gadhafi's son into the country.

A statement released by Mexican authorities on Wednesday said the attorney general's office had shut down the group's efforts to bring al-Saadi Gadhafi and his family into Mexico.

Members of the group, which also includes a Dane and two Mexicans, have been charged with attempted smuggling, falsifying documents and participating in organized crime.

An arrest warrant has been issued for a fifth suspect.

Cynthia Vanier, a consultant from Mount Forest, Ont., is accused of masterminding the plot.

The document states the group rented a plane for an attempt to bring Gadhafi from Libya to Mexico, but the plot failed when pilots refused to land without proper clearances. They later organized a second attempt to fly him over, which was also unsuccessful, the document states.

The group is also alleged to have falsified a passport, voter registration card and birth certificate. They allegedly  purchased a safe house in Bahia de Banderas, Mexico where they intended to hide Gadhafi.

Meanwhile, the Canadian woman detained in relation to the alleged plot has been hurt by police and is terrified about her situation, her parents say.

Vanier was arrested in Mexico in November and has been held without charges until now.

Her parents, Betty and John MacDonald, said Tuesday their daughter was hurt by police when she was initially arrested, when an officer elbowed her in the back. Vanier passed blood in her urine as a result, they said.

They say she was also recently moved to a "horrible" prison in Chetumal, Mexico, with no running water or access to medication she requires, adding to her stress.

The MacDonalds called on Ottawa to send a representative to Mexico to look into the allegations against their daughter, rather than taking the Mexicans' word that she was involved in carrying out an international crime.

Representatives from the Department of Foreign Affairs and International Trade have said local consular officials are doing what they can to help.

With files from The Canadian Press