Following anti-mining protests that erupted as a result of four people killed in clashes between police and prote, Peru declared a 30-day state of emergency in the Apurimac region on Tuesday.

The four were shot dead in clashes between police and protesters at the Chinese-owned Las Bambas mine project.

Locals fear the $7.4bn (£4.9bn) copper mine project will cause environmental damage to the Andean area.

The government said extra troops would be sent to Apurimac "to restore internal peace"

While the state of emergency is in force, police are able to search homes without a warrant and freedom of assembly is suspended.

It is the second time this year a state of emergency has been declared in Peru to quell anti-mining protests.

In May, a state of emergency was declared for 60 days in the province of Islay in Arequipa after protests against the Tia Maria copper mine turned deadly.