The head of Chile’s military police announced the suspension of pellet use as an anti-riot tool, except in cases of legitimate defense when a situation represents a death threat.

Mario Rozas said Tuesday the measure will be in place while the pellets are subjected to tests requested from laboratories, Venezuela-based TeleSur reported.

“The restriction will be evaluated when we have in our possession the results of the studies,” Rozas sais.

The decision was made by military police after a study by the Chile University that states pellets are made of 20% rubber and 80% different elements, such as lead.

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