They said they believed her ex-husband was responsible, rather than Islamic extremists who had ruined his career with the prohibitions enforced brutal singing for dancing.
She was murdered along with his father as he left a beauty salon.
"Two men on a motorcycle sprayed bullets and fled, leaving a pool of blood," said Dilawar Bangash, a senior police officer.
The singer fled to Peshawar in 2009 to escape the Taliban then dominated the northwestern district of Swat, while the army has launched a radical.
Ghazala Javed sung in her native Pashto language and released over two dozen albums that were popular among speakers of Pashto in northwest (Khyber pakhtunkhwa) and other areas of Pakistan.
Ghazala Javed family said she was unpleased to discover that he had another wife and their attempts to stop her singing.
Pakistani Pashto Singer Ghazala Javed Dead Photos and Video