A boy (right) rides his horse as policemen from the Special Operations Battalion (BOPE) patrol at the Mare slum in Rio de Janeiro, Brazil, on March 30, 2014. Picture: Sergio Moraes

Rio de Janeiro -

More than 1 000 Brazilian police backed by helicopters and naval armoured vehicles took over a favela near Rio de Janeiro's international airport on Sunday, just 74 days before the World Cup.

The swiftly conducted dawn operation was the latest attempt to drive drug gangs out of the notorious Mare shantytown, a haven for organised crime and one of the city's most dangerous places.

The Mare, close to the airport and home to 130 000 people, is a potential through route for tens of thousands of football fans flying in and out of the city, which will stage seven World Cup matches including the July 13 final.

Members of the feared Special Police Operations Battalion swarmed through the favela in 15 minutes without facing resistance, while helicopters buzzed overhead.

Police had their weapons trained on the rooftops but apart from a few bars close to the entrance of Mare the labyrinth of narrow streets was empty and dark.

At sunrise police raised a Brazilian flag in the main plaza, and soon after they were giving horseback rides to local supporters in what officials denied was a security effort directly linked to the forthcoming football extravaganza.

The operation, however, was partly orchestrated for the media as police had already last week taken over part of the favela, making 57 arrests and confiscating drugs and weapons - 13 more people were detained on Sunday.

Authorities have recently stepped up efforts to quell violence in Rio as the World Cup looms. A huge slum “pacification” programme has been in place since 2008 aimed at making the city - which will also host the 2016 Olympics - safer.

In recent years Police Pacification Units (UPPs) have been installed in 174 Rio favelas, home to around 600 000 people.

Rio's security secretariat said 1 180 officers were involved in the operation, backed by at least 14 armoured vehicles and four helicopters.

Police seized “large quantities of drugs and weapons” that were hidden near the Olympic Village and a public school, said the GloboNews chain.

According to the intelligence services, drug traffickers who left Mare after the announcement on Monday of the planned occupation could come back later, meaning authorities face a long-term battle to keep the volatile area under control.

As the sun rose shops slowly began to open but many favela residents were irritated by the presence of security forces and journalists. Few wanted to talk to reporters.

“Me, I think it's fine, the state must be present everywhere in Rio,” a trucker called Jorge - he declined to give his full name - told AFP.

“Now it will depend on the police who move here because there are those among them who commit abuses.”

After decades battling organised crime in the poor communities surrounding the city, authorities had hoped that the favela “pacification” program had brought down crime.

But renewed violence this year has claimed the lives of eight police officers - four of them in “pacified” districts.

Keeping a lid on crime has become key to Rio's bid to turn the city into an international showcase for the World Cup and the Olympics, the first Olympiad in South America.

The occupation of Mare by security forces will be similar to that carried out in 2010 in the Alemao network of favelas, home to about 300 000 people.

Alemao was occupied one week after 35 people were killed in bloody clashes between police and drug dealers.

Rio state secretary for security affairs Jose Mariano Beltrame said on Sunday that Mare had to be taken because of its strategic location between the airport and the city.

“This is not for the World Cup or the Olympic games,” he said. “The World Cup will be over in a month, and Mare will stay there.”

The operation “is not to enter the homes of every resident but rather specific places of people wanted by the law,” Beltrame added. - Sapa-AFP