Matthew McMullen sentenced for sex offense

A 27-year-old former police officer working for the Department of the Defense was sentenced Tuesday to 57 months behind bars for traveling interstate to have sex with a minor.

Matthew McMullen, of California, Md., entered the guilty plea in the U.S. District Court for the District of Columbia. McMullen faces a maximum sentence of 30 years of imprisonment and a fine of $250,000. Federal sentencing guidelines call for 46 to 57 months in prison.

According to evidence, McMullen contacted an undercover FBI agent through a social networking site in February. He began emailing the agent, saying he was interested in having sexual contact with an under-aged child. He traveled from Maryland to a pre-arranged meeting place in Washington, D.C. When he arrived, he was arrested.