Some 200 spectators at the World Cup final match at International Stadium Yokohama had tickets with identical seat numbers, police said Monday.
The tickets were for seats in the Category 1 section of the stadium, where tickets cost the most, at 84,000 yen, according to police and the Japanese World Cup Organizing Committee.
As the fans who were unable to find their seats due to the duplications filed complaints to JAWOC before Sunday night's game began, they were given spare seats, JAWOC officials said.
Police said they have questioned the spectators about where they obtained the tickets.
Cup arrests total 93
Ninety-three people were arrested nationwide between May 28 and June 30 in connection with offenses related to the World Cup soccer finals, the National Police Agency said Monday.
Thirty of the arrests were on suspicion of ticket scalping, followed by 17 for obstructing police work and 10 for public indecency.
Others were arrested on suspicion of causing injuries and trespassing into stadiums, the NPA said.
Japanese accounted for 60 of the 93 arrests, followed by 13 British citizens and three Irish nationals, the agency said.
A large number of arrests were made on days when Japan played, as well as when England faced Argentina, according to the NPA.
Sixty-eight foreigners were refused entry into Japan or lost permission to stay in the country after being identified as hooligans, the agency said. By nationality, Britons made up the largest number, at 53.
"Although there was trouble from Japanese supporters, we believe the tournament was successful, with no problems regarding potential terrorists or hooligans," agency officials said.
The World Cup, cohosted by Japan and South Korea, began May 31 and ended Sunday.