Authorities in a northern Mexico border state say two sons of a well-known journalism couple have been assassinated.

The Chihuahua state prosecutor's office says 21-year-old David Paramo and 23-year-old Alejandro Paramo were followed by gunmen, intercepted at an intersection and shot as they were driving home about 4 a.m. Saturday in the state capital.

They were the sons of financial journalist David Paramo of TV Azteca and Martha Gonzalez Nicholson, who is editor of the newspaper Peso de Chihuahua.

Prosecutor's spokesman Carlos Gonzalez said Sunday that the killing had nothing to do with the parents' work as journalists. He gave no specifics on possible motives, saying only that the office was following "other lines of investigation."