(CNN) -- Colombian rebels say they plan to release five hostages as a humanitarian gesture.

In a communique released Wednesday, the Revolutionary Armed Forces of Colombia, or FARC, said it will free a police major, two military service members, and two municipal politicians.

The document was posted on a website known for publishing messages from the group.

In the same statement, the FARC criticized Colombia's attorney general for removing and disqualifying Sen. Piedad Cordoba from serving in the legislature. Cordoba had worked with the FARC in the past to achieve the release of other hostages. The attorney general cited her close ties to the group as the basis for her removal from the senate.

The FARC said it stands in solidarity with Cordoba, who it called the "senator for peace."

The hostages to be freed were identified as police Maj. Guillermo Solorzano, Army Cpl. Salin Sanmiguel, Marine Henry Lopez Martinez, and mayors Marcos Vaquero and Armando Acuna.