RIO DE JANEIRO -- A police officer was shot in the head after he and two others working security at the Rio de Janeiro Olympics got lost near a slum and encountered gunfire.The officers from Brazils national security force were using a GPS device to navigate unfamiliar streets Wednesday afternoon when they took a wrong turn off a highway leading to Rios international airport. Their truck was sprayed with bullets, and officer Helio Vieira was shot. The Justice Ministry said Vieira was recovering after a four-hour surgery, and was in stable condition. The other officers suffered minor injuries when the windows of their vehicle shattered.Dozens of heavily armed commandos could be seen Thursday frisking residents and going house to house in the Mare complex of slums, one of Rios most crime-ridden areas that is dominated by drug-trafficking gangs. Snipers took up positions on a nearby highway, as a low-flying police helicopter circled overhead.Justice Minister Alexandre de Moraes said two suspects had been identified but were not yet in custody. He denounced what he called a cowardly attack.The incident was the bloodiest of several that have marred the start of South Americas first Olympic Games.On Tuesday, two windows were shattered on a bus carrying journalists from an Olympic venue in the impoverished Deodoro district. Rio organizers said the bus was hit by a rock, even though one passenger, who identified herself as a former American military officer, believed the cause to be gunfire. There were no serious injuries.The equestrian venue in Deodoro has had two brushes with stray gunfire since the games started. A bullet flew through the roof of a media tent there Saturday; officials said it had been fired from a hillside slum, and that the intended target was probably a security camera on a blimp. A second bullet hit Wednesday near the stables. Officials were adding more security at the venue.Muggings have also been reported among Olympic athletes, officials and journalists.Pervasive violence is an everyday part of life in Rio. After declines in past years, homicides have spiked again as Brazils worst recession in decades fuels violence and forces budget cuts. The number of homicides in the first five months of 2016 increased by 18 percent to 1,870 in greater Rio.Police killings are also on the rise, with the vast majority of victims black residents of impoverished slums that are fiefdoms of the citys many criminal gangs.More than 85,000 security forces -- double the number present in London in 2012 -- have been deployed to the city to keep thousands of Olympic athletes and an estimated 500,000 tourists safe.---Joshua Goodman is on Twitter: https://twitter.com/apjoshgoodman His work can be found at http://bigstory.ap.org/journalist/joshua-goodman Cheap Jordans From China . 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A dominant offensive display from Diamonds shooters Caitlyn Bassett and Caitlyn Thwaites has led the world champions to a 68-43 win over South Africa in their Netball Quad Series opener.The 193cm Bassett and 188cm Thwaites, playing a half each in Auckland, repeatedly employed their height and reach advantage over Proteas defender Phumza Maweni to good use.The pair scored a combined 51 points as Australia eased to victory over a valiant South Africa outfit, who bettered their 35-point thumping against the Diamonds in the World Cup.Goal attack Natalie Medhurst nailed a further 12 points before making way for debutant Stephanie Wood, who scored five.The world champions went on the offensive from the get-go, repeatedly hitting Bassett with passes over the top from midcourters Kim Ravaillion and the returning Madi Robinson.Bassett netted 16 of her 17 shots in the first quarter as the Diamonds raced to a nine-point lead.At the other end of the court, goalkeeper Sharni Layton ensured the absence of skipper Laura Geitz didnt impact too heavily on the side,, marshalling from the back with authority and restricting limiting Proteas shooter Lenize Potgieter to eight points.dddddddddddd.The match followed a similar pattern in the second quarter, as the Diamonds put their foot down.Ravaillion and Robinson snared a combined 17 goal assists over the two quarters to take the Diamonds into the halftime break ahead 36-20.Coach Lisa Alexander rung in the changes at the halftime break, introducing April Brandley into the defence and young gun Liz Watson as centre.Bassett was also given a breather for the second half, swapped out for Thwaites after her 28-goal showing.A closer third quarter ensued, with the Proteas limiting the third-quarter tally to 14-10.Wood and fellow defensive debutant Kristiana Manua were both given their Diamonds debut in the fourth quarter as the Diamonds wound down the clock.Thwaites, 29, finished her half on the court with a perfect 23 points from 23 shots. 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