Several people were also injured in the incident on Monday at the popular tourist site, say Mexican officials, weeks before the country hosts the Fifa World Cup.
The BBC's chief international correspondent Lyse Doucet is reporting from Tehran on condition that none of her material is used on the BBC's Persian Service. These restrictions apply to all international media organisations operating in Iran.
Patel alleges that the magazine published false and harmful claims about his conduct, including accusations of excessive drinking and unexplained absences from duty.
Kyren Wilson recovers from 6-2 and 7-3 down by winning seven frames in a row to deny 19-year-old Stan Moody a memorable victory on his World Championship debut at the Crucible.