Islamabad, Pakistan (CNN) -- The widow of a man fatally shot by a U.S. diplomat in Pakistan died Sunday after swallowing pesticide pills, upset over what she saw as a lack of justice in the case, doctors and family members told CNN.
Shumaila Kanwal was rushed to a hospital in her hometown, one hour west of Lahore, after attempting suicide. She died there despite doctors' efforts, said Rana Bashir, a hospital official.
Kanwal's brother-in-law, Waseem Shamshad, said she was convinced justice would not be served in the case of her husband's death. It was an idea she expressed shortly before dying.
"I need justice. I need blood for blood," Kanwal said as she lay in a hospital bed, as reported by Dawn News, a local television channel. "He (Raymond Davis) should not be set free."
Davis, who works at the U.S. consulate in Lahore, has been jailed since January 27, when authorities say he shot and killed two men on a motorcycle. Davis said the men were trying to rob him and attacked as he drove through a busy neighborhood, according to the U.S. Embassy in Pakistan.
A Pakistani police official has identified the dead men as Faheem Shamshad, 26 -- Kanwal's husband-- and Faizan Haider, 22.
When police searched the bodies, they found stolen cell phones and cash that belonged to men who had reported being robbed earlier that day, the official said.
The U.S. Embassy in Pakistan has said its employee shot two armed men in self-defense and has called for the Pakistani government to release him, saying Davis is entitled to diplomatic immunity.
The case has sparked some protest and fueled anti-American sentiments in Pakistan.
During several protests last week, hard-line clerics condemned the shootings and demanded the government not release Davis to the U.S. government. They want him to be tried in Pakistan.
Last week, a judge in Lahore ordered the government to hold Davis for at least eight more days and place his name on an exit control list to ensure he does not leave the country.
Journalist Nasir Habib contributed to this report