Nearly three in 10 convicted human traffickers worldwide are female, according to a U.N. report Monday which found that women play a bigger role in trafficking than other major crimes such as murder or robbery.

The United Nations Office on Drugs and Crime (UNODC) said that 28 percent of convicted traffickers between 2010-2012 were women, many of them acting as guards, recruiters and money collectors, to gain the trust of female victims.

In contrast, between 10 percent and 15 percent of the total number of people convicted of serious crimes were female, the report said.