The president of Honduras, Porfirio Lobo, has pledged a full and transparent investigation after a jail fire killed more than 350 inmates.
Mr. Lobo also suspended local and national prison officials while the inquiry into the tragedy at the jail was conducted.
Many victims suffocated or burned in their cells.
Human Rights Watch said the tragedy was the result of chronic overcrowding in Honduran jails.
The fire in the jail in Comayagua started late on Tuesday night and took more than an hour to be brought under control.
Prisons in Honduras, which has the highest murder rate in the world, are often seriously overcrowded and hold many gang members.