Three oil workers were killed in Pakistan when a remotely-detonated bomb exploded in south-western Pakistan on Tuesday. The workers were performing a survey for a local oil exploration company.
Local police official Mohammad Hussain said the bombing took place near the town of Dera Bugti, in Baluchistan province, and also wounded five surveyors.
No one has claimed responsibility for the bombing, but small nationalist groups and separatists have mounted previous, similar, attacks in the province. Islamic militants also have a strong presence in Baluchistan.
The latest violence comes one day after assailants ambushed a convoy of paramilitary troops, killing six. This attack took place in the Awaran district of Baluchistan. No group has claimed that attack either.
Baluch separatists have staged attacks for years, demanding a larger share of provincial resources and wealth, or complete autonomy from Islamabad.
In a separate incident on Tuesday, a grenade was thrown at the election office of a candidate running for a seat in parliament. According to the AP, the blast left 10 people wounded, according to Ayaz Khan, who is an assistant commissioner in the town of Ramzak, in the northwest near the Afghan border.
The candidate, Aurang Zeb, who is from the party of former cricket star Imran Khan, was not present at the time of the attack.
This is the first such violence ahead of the July 25th vote.