BRUSSELS (Reuters) - EU antitrust regulators will investigate whether a network sharing deal between O2 CZ/CETIN and T-Mobile CZ curbs competition in the Czech Republic, the European Commission said on Tuesday.<div><a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=K2TAzNU_-Ts:M76eumj86F0:yIl2AUoC8zA"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?d=yIl2AUoC8zA" border="0" /></a> <a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=K2TAzNU_-Ts:M76eumj86F0:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?i=K2TAzNU_-Ts:M76eumj86F0:V_sGLiPBpWU" border="0" /></a> <a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=K2TAzNU_-Ts:M76eumj86F0:-BTjWOF_DHI"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?i=K2TAzNU_-Ts:M76eumj86F0:-BTjWOF_DHI" border="0" /></a></div><img src="http://feeds.feedburner.com/~r/reuters/technologyNews/~4/K2TAzNU_-Ts" height="1" width="1" alt="" />