Bahujan Samaj Party chief Mayawati on Monday condemned the gang-rape of a Dalit woman in Gautam Buddha Nagar and called for immediate action against the accused.

A middle-aged Dalit woman was allegedly gang-raped in Jewar area by men known to her on Sunday morning, officials said. The incident took place when the woman had gone outside her village to cut grass while the key accused, 28, had come there to graze his cattle, the officials added.

An FIR has been lodged in the case but no arrest has been made yet, the officials added.

"The gang-rape of a Dalit woman in Gautam Buddha Nagar is extremely sad and shameful. The BSP demands that the BJP government in UP take strong actions against accused persons, and give justice to the affected family," Mayawati said in a tweet in Hindi on Monday.

Meanwhile Congress leader Pankhuri Pathak, who led a party delegation to meet the Dalit woman's family, described the incident as a "heinous crime" and alleged failure of law and order in the region.

"Jewar's name is now heard often because of an airport being developed in the area but this incident of gang-rape gives one an idea of the law and order situation in the area, which is close to Delhi," Pathak said. She added that the delegation was going to meet the family on instructions of the Congress high command.

Azad Samaj Party chief Chandrashekhar Azad also hit out at the Yogi Adityanath government over the incident.

"In Gautam Buddha Nagar, a Dalit woman was gang-raped at gunpoint by barbarians and casteist slurs were hurled at her. The barbarians have no fear of the law. Law and order has completely failed in UP. Dalit lives are in danger every moment and the incompetent government remains a mute spectator," he said in a tweet in Hindi