MEXICO CITY (AP) -- Authorities in Mexico's northern state of Nuevo Leon say gunmen killed a police officer and apparently kidnapped two others who were on their way to investigate the slaying.
Nuevo Leon state's government says gunmen ambushed a state police patrol Tuesday in the town of Sabinas Hidalgo, killing an officer and wounding a colleague. Two other state police officers later went missing as they drove to Sabinas Hidalgo to investigate.
Officials say the incidents happened on a road near the state line between Nuevo Leon and Tamaulipas states.
Northeastern Mexico has seen an increase in violence, with at least 64 people killed in Tamaulipas in April. The area was long the scene of a turf battle between the Zetas and Gulf drug cartels, but violence had quieted over the last year.
Copyright 2014 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.