Four men allegedly raped a woman in front of her husband and their two-year-old son in Uttar Pradesh’s Muzaffarnagar district on Friday, the Hindustan Times reported. The men held a knife to the toddler’s throat to threaten the couple before raping the woman, the report said.

The woman, her husband and their child were returning from a trip to Basera village on their two-wheeler on Friday morning when they were intercepted by the accused in a car, the police said. The accused told the family to take a back road, claiming that the Ganga canal bridge on the main route was damaged.

But when the family took the detour, the men forced the motorcycle to stop and dragged the three to a sugarcane field. “After this, one of the men placed a sharp-edged knife against the woman’s son’s neck as they took turns to rape her,” an unidentified police officer at the nearby Bhopa Police Station said.

After the incident, the 25-year-old woman requested a farmer, who was passing by, for help. The farmer called the police, who took the family to the hospital for medical treatment.

“We are waiting for her medical report,” Muzaffarnagar (Rural) Superintendent of Police Ajay Sahdev told NDTV. “A case has been registered against the four, and an investigation is under way.”

The accused are on the run and have not been identified yet.