England were greeted with boos from the local fans after arriving in Mexico City ahead of theirs FIFA World Cup round of 16 clash against co-hosts Mexico, after a delayed trip aimed at keeping their preparations away from public view.According to The Sun, England manager Thomas Tuchel and the Football Association have opted to keep the squad at their training base in Kansas City as long as possible before traveling to Mexico City. The move was made to prevent rival teams from watching England’s training sessions ahead of the knockout match.The report states that England delayed their arrival to stop “spies” from observing their preparations.Security around the England camp has also been increased, with police and security personnel monitoring the team’s base. Tuchel wants his players to adjust to the high altitude conditions at the Azteca Stadium without revealing his tactical plans before the match.Despite the precautions, England received a bad welcome when they arrived at their hotel. Mexico supporters gathered outside the team hotel, chanting “Mexico” and booing as the England team bus arrived ahead of the last-16 fixture.Security was tightened around the hotel after the incident involving Ecuador in the previous round.After Mexico’s round-of-32 match against Ecuador in Mexico City, Ecuador filed a noise complaint with FIFA. According to reports, local supporters gathered outside the hotel in Ecuador late at night, using loudspeakers, horns and motorcycles to disturb the players.Mexico won that match 2-0.Ecuador is staying at the Westin Hotel, and England prefers not to reveal the location of their own hotel. However, there are concerns that the team’s location has been leaked.When the England squad arrived on Friday (local time), hundreds of local supporters were waiting outside. Some chanted “Mexico”, while others booed.According to the BBC, members of Mexico’s National Guard were stationed at the entrance to the England hotel, while police in riot gear stood behind barricades outside the property.England arrived two days before the match because FIFA rules require teams in the knockout stage to hold a partially open training session in the host city the day before the match.The team’s preparations were also affected on Friday after reports emerged that FIFA was considering moving kick-off six hours earlier due to typhoon forecasts.The proposal was discussed less than 48 hours before the match, but the Football Association and the Mexican Football Federation (FMF) opposed the idea. The game will now be played at its original scheduled time.England will also have to deal with the conditions in Mexico City, which is located at about 2,240 meters above sea level. Higher altitude means there is less oxygen available.