The Olympic cycling champion took the incident with good humour, saying the security guard was "just doing her job".
England has topped the Commonwealth Games medal table with 17 medals on the first day of the competition.
A run-down of all the big events from the 20th Commonwealth Games in Glasgow.
A Welsh athlete has been provisionally suspended from the Commonwealth Games in Glasgow after being charged with an anti-doping violation.
Rhys Williams, the Wales' 400 metres hurdles champion and son of rugby union great JJ Williams, became the second Welsh athlete to be forced out over an alleged anti-doping violation, after 800m runner Gareth Warburton.
In a statement Welsh Athletics said the 30-year-old had been charged with committing an anti-doping rule violation under the IAAF Anti-Doping Rules.
They said: "Rhys has the opportunity to respond to the charges against him and to have those charges determined at a full hearing before the national anti-doping panel."
They added: "Welsh Athletics is obviously concerned that this is the second anti-doping violation by a senior Welsh international athlete and will be conducting its own internal review."
Diver Tom Daley flatly denied rumours he is planning to retire when interviewed on Good Morning Britain.
The 20-year-old said he had no idea where the rumours had come from and was focusing on the European Championships and 2016 Rio Olympics.
In what promised to be a special night for hosts Scotland in the pool, Hannah Miley kicked it off with a gold in the women's 400m individual medley.
In the men's 200m, Scotland's Ross Murdoch won Commonwealth gold, beating fellow countryman Michael Jamieson who won silver.
ITV News' Sports Editor Steve Scott reports on a successful first day for the hosts:
Scotland's Ross Murdoch fought back tears on the podium as he picked up his Commonwealth gold, after winning the 200m breaststroke.
Thrilled Murdoch said: "There's no way that just happened. I can't believe it. That was amazing. It's a dream come true".
He told the BBC: "It's my grandad's 70th birthday today so that swim was for him."
Scotland's Ross Murdoch won Commonwealth gold in the 200m breaststroke this evening, with his fellow countryman Michael Jamieson taking silver.
Murdoch touched the wall first with a brilliant Games record of two minutes 07.30 seconds.
Andrew Willis took the bronze for England.
England's Colin Oates has grabbed a gold in the men's under-66kgs judo final against Andreas Krassas of Cyprus.
Gold also went to England's Nekoda Davis, who beat Stephanie Inglis from Scotland, in the women's under-57kgs final.
Sisters Kimberly and Louise Renicks secured Scotland's first two gold medals of the Commonwealth Games after wins in the judo competition.
Kimberly, the younger of the two sisters, defeated India's Sushila Likmabam to win the women's under-48kgs.
Louise completed the double-win for the Renicks' family after beating English competitor Kelly Edwards in the under-52kgs final, sparking wild celebrations from the home crowd at the SECC venue.
"I feel really proud with us getting the first gold medals for Scotland and there is much more to come," Louise Renicks said after her win.
Swimmer Hannah Miley later added to Scotland's gold medal tally with a win in the women's 400m individual medley.
They are not the first set of siblings to celebrate Commonwealth success today, after Alistair and Johnny Brownlee won gold and silver respectively in the triathlon.
The first gold medal went to Team England today after Jodie Stimpson swam, cycled and ran into sporting history.
There was also gold for Alistair Brownlee and silver for his brother Jonny in the men's triathlon race.
But Sir Bradley Wiggins was denied a golden return to track cycling, as he and England's pursuit team were beaten by a superior Australia.
ITV News Sports Editor Steve Scott reports from Glasgow: