Fuerza Pública officers returned to Barrio Frey Casiano in force Wednesday in response to an attack by a crowd on officers last week.
Some 350 residents, including women and children pelted eight officers with rocks and one was shot in the mouth by a firearm.
Some 150 officers were involved in the latest sweep. Officials of the Fuerza Pública also met with community leaders and Puntarenas politicians. Officers said they interrogated 400 persons and confiscated 10 knives and small quantities of drugs.
Saturday police were in the area to help a Tránsito officer confiscate a vehicle. That is when the crowd attack took place. The exact reason has not been determined.