Police are reviewing security at Dallas Stadium in Arlington after several people entered Monday’s World Cup match without tickets and one eluded capture. Arlington Police told NBC 5 Investigates they arrested four people who entered the stadium without tickets ahead of the match between Argent ina and Austria. Police said they later learned that two of those people entered with a third person who also did not have a ticket and whose whereabouts were unknown. Officers searched the stadium but never found the unticketed fan. In a statement to NBC 5 Investigates, Arlington Police said the department is reviewing the incident. “We take this matter seriously and are reviewing it to determine what additional measures we may need to take to prevent future incidents like this. While we remain confident in the extensive security planning that went into this event, we never become complacent,” police said. Theron Bowman, a law enforcement consultant and former chief of police for the Arlington Police Department, said attempts to get into large venues without tickets are not unusual. “Sometimes people will poke around at different entrances to try and get in. Most of the time they’re not successful,” Bowman said. Bowman said that one fan breaching security rarely poses a major concern unless police have intelligence suggesting the person poses a threat. He said Monday’s incident gives authorities an opportunity to re-examine security procedures at stadium entrances. “When we have incidents that occur. We try and make sure that we look at every potential aspect of the security or if there was a security breakdown, that we continue to train our people on that from the ushers in the stadium to the ticket takers to the security people,” Bowman said. In the weeks leading up to the World Cup, local, state and federal law enforcement officials fortified the stadium with vehicle barriers, metal perimeter fencing and heavily policed entry checkpoints. The measures were put in place to protect fans, visiting dignitaries and world leaders attending matches played by their respective national teams. World Cup officials have described the games as the most complex security events in U.S. history. The security breach is raising questions about whether more needs to be done to ensure that no one enters a stadium unchecked. Police told NBC 5 Investigates that two of the four people arrested for criminal trespass at Monday’s match were Argentine nationals. Another person was from Florida and the fourth was from Plano. NBC 5 Investigates contacted FIFA to ask whether it has any concerns about security at upcoming Dallas matches, but has not heard back. After last week’s match between England and Croatia, some British newspapers reported England fans claimed they saw people entering Dallas Stadium in Arlington without tickets. Arlington Police said they have seen no evidence to support those claims. ...read more read less