CIUDAD JUAREZ, Mexico -- A total of 15 people were killed in separate incidents in Juarez Friday.

State prosecutor's spokesman Arturo Sandoval said a university professor, three women and a 7-year-old boy were among those who were killed.

According to Sandoval, the boy was riding in a truck with his father when gunmen opened fire killing them both.

The professor was killed in a residential area, and nine men were killed in six seperate incidents.

More than 1,700 people have been killed in Juarez this year.