A Buffalo man has been indicted by a federal grand jury for trying to entice a minor to engage in sexual activity, U.S. Attorney William J. Hochul Jr. announced Thursday.

According to the indictment, Robert P. Dombrowski, 50, was arrested last March 9 when he arrived at a restaurant to meet someone he had been chatting with online since February. Prosecutors said that Dombrowski believed the online person was a minor, but it actually was an undercover FBI agent.

If convicted, Dombrowski faces a mandatory minimum penalty of 10 years in prison and a maximum sentence of life plus a $250,000 fine. The investigation was carried out by FBI agents and the Violent Crimes Against Children Task Force.