Thirty-four suspects were detained in Poland on allegations of trading in child pornography on the internet, Polish Interior Minister Janusz Kaczmarek confirmed Tuesday in Warsaw, according to dpa. "The investigation began with the information that people are downloading pornographic materials," Kaczmarek said. Police have not ruled out the detention of more suspects in the case. Over 300 police officers were involved in Monday's sting operation which also claimed nearly 100 computers and more than 3,000 CDs and DVDs as evidence.