Security at Rio's Olympic Village was handed a further blow Wednesday when Danish athletes revealed they have had items stolen while organisers issued a public apology to competitors who have fallen victim to crime.

Denmark's chef de mission Morten Rodtwitt told broadcaster TV 2 that mobile phones, clothing and an iPad had gone missing.

"In connection with the many extra workers, cleaners and housekeepers who have been squeezed into the Olympic village because of our requirements and requests, we have been subjected to a series of thefts," he said, adding that he himself had his iPad stolen.

"It's everything from phones, iPads and clothes to something as trivial as bed sheets."

Since July 18 the Danish delegation has lodged around 150 complaints over problems in its 36 apartments in the Olympic village.

"The buildings are simply not in order," Ulrik Wilbek, sports director of the Danish Handball Federation, told TV 2.