Women's semifinals that should happen today, Friday, were cancelled (not enough number of competitors, I guess).
Men's semifinals that started yesterday, Thursday, are going to be finished today (delay due to darkness), actually semifinals A were finished yesterday and group B will have the combined event today.
Thanks to Bill Kellick and USA Pentathlon for the updates:
Get to know more about...
The American team: http://usapentathlon.org/news/2010/03/03/first-world-cup-of-2010-set-to-begin-in-mexico/34271?ngb_id=17
The Irish team: http://www.mpaireland.com/images/stories/mexico2010/mexico1.pdf
The British team: http://www.pentathlongb.org/home/home_news.php?news_id=1112
The German team: http://www.dvmf.de/index.php?id=13&tx_ttnews[tt_news]=110&tx_ttnews[backPid]=4&cHash=0a6937bd16
The Hungarian team: http://www.pentathlon.hu/
The Guatemalan team: http://www.pentatlonmodernoguatemala.com/training.php
The Czech team: http://www.pentathlon.cz/cs/Reprezentace-6.htm
The Mexican team: http://www.codeme.org.mx/index.php?option=com_content&view=article&id=194:pentatletas-en-copa-mexico-2010&catid=35:noticias&Itemid=117
Local media coverage (in Spanish):