02/21/2013 09:08 am ET

Hispanic Men Targeted By Robbers In Plano, Texas

A string of attacks, targeting Hispanic men in east Plano, have police there concerned.

Officers believe the same two or three men have robbed and assaulted at least five victims since late October.

The latest victim, Isaias Vasquez, 31, has the mind of a child, according to his family.

“It was scary because of his condition. He can’t defend himself,” said his sister, Nancy Vasquez.

Isaias was walking home, she said, when three men approached, asked for his wallet, then began hitting him with a thick wooden pole.

Read more on CBS DFW