MEXICO CITY -- A state legislator was shot to death Thursday on a highway in western Mexico, the second politician killed in the state of Jalisco in a week.

The state prosecutors' office said Saul Galindo was slain in the rural township of Tomatlan, where he once was mayor.

The office said Galindo was pulled from his truck by six assailants and shot to death in front of his son.

Galindo headed the Justice Commission of the state legislature.

Victor Hugo Prado, the head of Galindo's Democratic Revolution Party in Jalisco, said Galindo was planning to run for mayor again.

Prado noted that another former prominent party member was killed on Dec. 24. Salvador Magana was stabbed to death by unidentified assailants in another part of the state. He had been active in environmental causes and denounced alleged vote buying.