Militants ambushed a security convoy and hours later a suicide bomber struck a police station in twin attacks in northwest Pakistan Wednesday that officials said left least three police officers dead and 20 wounded, in the latest sign that violence is escalating in the region bordering Afghanistan.
The first attack occurred in the district of Upper Dir in Khyber Pakhtunkhwa province, where militants ambushed a security convoy, killing three police officers and wounding 15 others, local police official Ibrahim Khan said.
