One of the accused later died by suicide, police said.
The attack took place less than two months after the two accused were released on bail in the rape case.
The woman's family said they had approached the police last week, alleging death threats from the accused duo.
The victim said the police took no action on her complaint.
According to the police, the accused entered the 20-year-old woman's house carrying domestically manufactured .312 and .315 caliber rifles and sharp weapons, along with a third assistant.
One of the men began shooting inside the room where the woman and six members of her family were sleeping, killing her mother and wounding her father and her two sisters, according to police.
"An FIR has been registered on the complaint of the victim's family with the Fatehpur Chaurasi police. The FIR says that the attack was premeditated. The police have launched an investigation into the case. Those who are fleeing will soon be arrested," Inspector General Police chief (Lucknow firing range) Prashant Kumar said.
The woman's father and her 24-year-old sister were rushed to LLR Hospital in Kanpur for treatment and her condition is reportedly stable. Her 12-year-old sister is receiving treatment at a local health center, police said.
The police officer said one of the attackers committed suicide near the woman's house.
They said that a video was recovered from the deceased accused's mobile phone, in which he allegedly said that he was going to kill the complainant and her family because he was falsely implicated in the rape case.
The other two attackers have fled.
Those accused of gang rape were arrested in August last year after the woman lodged a complaint. They were released from jail on May 10 after being released on bail.
The rape complainant, who survived Monday's attack, said her father approached the Fatehpur Chaurasi police on July 3, suspecting a possible attack by the rape accused.
He added that the police neither provided them any security nor took action against the accused.
Inspector General of Police Kumar admitted a "serious error" on the part of the police and said erring officers will be held accountable.
Safipur Circle officer Maya Rai will investigate the incident and submit a report at the earliest, sources said.
The attack took place less than two months after the two accused were released on bail in the rape case.
The woman's family said they had approached the police last week, alleging death threats from the accused duo.
The victim said the police took no action on her complaint.
According to the police, the accused entered the 20-year-old woman's house carrying domestically manufactured .312 and .315 caliber rifles and sharp weapons, along with a third assistant.
One of the men began shooting inside the room where the woman and six members of her family were sleeping, killing her mother and wounding her father and her two sisters, according to police.
"An FIR has been registered on the complaint of the victim's family with the Fatehpur Chaurasi police. The FIR says that the attack was premeditated. The police have launched an investigation into the case. Those who are fleeing will soon be arrested," Inspector General Police chief (Lucknow firing range) Prashant Kumar said.
The woman's father and her 24-year-old sister were rushed to LLR Hospital in Kanpur for treatment and her condition is reportedly stable. Her 12-year-old sister is receiving treatment at a local health center, police said.
The police officer said one of the attackers committed suicide near the woman's house.
They said that a video was recovered from the deceased accused's mobile phone, in which he allegedly said that he was going to kill the complainant and her family because he was falsely implicated in the rape case.
The other two attackers have fled.
Those accused of gang rape were arrested in August last year after the woman lodged a complaint. They were released from jail on May 10 after being released on bail.
The rape complainant, who survived Monday's attack, said her father approached the Fatehpur Chaurasi police on July 3, suspecting a possible attack by the rape accused.
He added that the police neither provided them any security nor took action against the accused.
Inspector General of Police Kumar admitted a "serious error" on the part of the police and said erring officers will be held accountable.
Safipur Circle officer Maya Rai will investigate the incident and submit a report at the earliest, sources said.
