Fire damaged the transport ministry office that handles taxi licensing and bus concessions, but ministry officials said that no important papers wre destroyed.
Firemen said the alarm came in at 4:58 a.m. They blamed an electrical problem in a computer.
The office is located near the Y Griega traffic circle in south San José.
The ministry identified the office as that of the Consejo de Transporte Público. The major damage was in the administrative office of the Consejo, it added. Although the damage to the building was significant, the Consejo is maintaining normal hours of 8 a.m. to 4 p.m. Monday through Friday, officials said.