SAO PAULO, April 11 (Xinhua) -- Four people, including a military police officer and three suspected robbers, were killed in a shooting early Saturday in the city of Sorocaba in Brazil's Sao Paulo state, authorities said.

The incident followed a robbery at a pharmacy in the Campolim neighborhood. Police located the suspects shortly after the crime, leading to an exchange of gunfire.

A 28-year-old officer was shot in the head and later died from his injuries.

Three suspects were killed in the shootout, while a fourth was arrested and another escaped, police said.

Authorities added that two revolvers with erased serial numbers and a replica handgun were seized at the scene. ■