At least four buses have been hit by the rocks, the vandalism occurring between kilometres 19 and 21, in Rincon Chiquito, in La Guacima, between 6pm and 8pm.
Quick action by authorities resulted in identifying the attackers, according to Enrique Arguedas, deputy director of the Fuerza Publica, Alajuela.
Arguedas said those responsible were minors, who threw stones at cars, light trucks and buses.
Marino Luis Solano, managing director of the bus company providing service between San Jose and Atenas, confirmed the acts and said the latest incident occurred Tuesday night.
“Fortunately there were no injured people, only material damage estimated at more than ¢1 million colones,” said Solano.
Solano said he ordered his drivers to divert before the kilometers 19 and 20, until incidents do not recur.
Arguedas said they talked to the parents of the youths involved, who were surprised at the allegations. The PANI – child welfare service – has been notified to follow-up with the families.
The deputy police director added that additional units will be patrolling the area to prevent these events from happening again.