TORONTO — Air Canada says a passenger found what appears to be a sewing needle in a catered sandwich on board a flight from Victoria, British Columbia, to Toronto.

Peter Fitzpatrick, a spokesman for the airline, said late Tuesday that the airline is "working closely with our caterers to ensure heightened security measures have been put in place."

Fitzpatrick says the airline contacted the caterers immediately after Monday's discovery. He says a police investigation is under way and they have not received any further reports of similar incidents.

Dutch police said earlier in July they were investigating how needles got into six sandwiches on Delta Air Lines flights from Amsterdam to Minneapolis, Seattle and Atlanta. Passengers discovered four of them.

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  • In June 2010, we found out from the FDA that <a href="http://www.huffingtonpost.com/2010/06/28/fda-airplane-food-prepare_n_627797.html" target="_hplink">airplane food is prepared among mice, bad hygiene and worse. </a>

  • In response, <a href="http://www.huffingtonpost.com/2010/07/01/schumer-wants-stiff-fines_n_632571.html" target="_hplink">Senator Charles E. Schumer pushed for stiffer fines against companies that prepare airline food in unsanitary conditions</a>. (Photo by T.J. Kirkpatrick/Getty Images)

  • In May 2011, a mother filed a claim in Australia's Supreme Court <a href="http://news.travel.aol.com/2011/05/23/renee-cherry-sues-virgin-australia-over-unborn-babys-food-poiso/" target="_hplink">stating that her unborn son suffered food poisoning on a Virgin Australia flight after she ate a tainted chicken roll</a>.

  • Shortly thereafter, a man filed suit in the Australian Supreme Court against Virgin Australia, <a href="http://news.travel.aol.com/2011/05/27/virgin-australia-lawsuits-another-passenger-sues-over-tainted-c/" target="_hplink">which he blamed for his needing kidney surgery after eating the bad chicken</a>.

  • Chicken was also the culprit in November 2011, when a woman claimed <a href="http://www.gadling.com/2011/11/30/american-airlines-food-killed-passenger-claims-lawsuit/" target="_hplink">food poisoning contracted from an American Airlines meal killed her husband</a>.

  • In April 2012, <a href="http://www.huffingtonpost.com/2012/04/02/qantas-passenger-finds-maggots-in-flight-snack_n_1397498.html" target="_hplink">a Qantas passenger found that her snack packs of trail mix were infested with maggots</a> -- after she'd already taken a bite.

  • In July 2012, <a href="http://www.huffingtonpost.com/2012/07/16/needles-found-in-turkey-s_n_1677854.html" target="_hplink">needles were discovered in turkey sandwiches on four separate Delta flights</a> from Amsterdam.

  • Then, in August, an <a href="http://www.huffingtonpost.com/2012/08/01/air-canada-passenger-find_n_1727525.html?utm_hp_ref=travel" target="_hplink">Air Canada passenger found what appeared to be a sewing needle</a> in a sandwich.