A man gunned down three others following an argument about pigeon racing, Portuguese police told news outlets.
All four men lived in Setúbal, about 30 miles southeast of Lisbon, and raced pigeons, a sport involving the release of specially trained homing pigeons, according Portuguese newspaper.
The three victims were pigeon racing rivals with the suspect, a middle-aged man, and their dispute was related to the birds and the planting of illegal vegetable patches.
The suspect shot and killed the three men on April 29, and he also turned the gun on himself before police arrived, according to Portuguese news outlet.
The incident is now under investigation.
The shooting was described as “an isolated situation,” Andreia Gonçalves, the city’s police commissioner said, according to Mister Truth.
Portugal maintains strict gun laws, though firearms can be legally obtained for hunting.
A representative for the Setúbal police did not respond to a News request for comment.