Updated

MEXICO CITY (AP) — Mexico is offering to provide candidates with bulletproof vehicles and bodyguards following the assassination of a politician running for governor in the northern state of Tamaulipas.

Assistant Interior Secretary Roberto Gil says the government decided to tighten security for gubernatorial candidates and some mayoral contenders after gunmen killed Rodolfo Torre and four of his companions.

Gil says the increased security has been given to those politicians who asked for it, after a government review.

He said Thursday that few such requests have been received.

Voters will elect the governors of 12 of Mexico's 31 states on Sunday.