ANTIOCH -- An Antioch man who was beaten and shocked with a stun gun after somebody entered his home may have been an intended target, police said Friday.

The man, whose identity and age were not released by police because of the ongoing investigation, was taken to a hospital and released after suffering injuries that weren't life threatening, Lt. Tammany Brooks said.

Police were called to the home on Patricia Lane around 3:10 p.m. on Wednesday, when the man's girlfriend arrived home to find the man tied up, Brooks said. Her screams alerted neighbors, who called police, he said.

The man told police that upon answering the door, three men burst into his home, beat him and tied him up, using a stun gun as a weapon, Brooks said. The suspects took a large supply of marijuana that police were told was for medicinal purposes, Brooks said.

Police are still investigating that aspect of the case, along with others, Brooks said. An initial investigation indicates that it did not appear to be a random act, Brooks said.

Rick Hurd covers crime. Contact him in Antioch at 925-779-7166 and follow him at Twitter.com/3rdERH.