The accused has been identified as Krushna Chandra Sahu, a resident of Pratappur under Purusottampur police station limits in the district.
The victim, who belongs to Kalamba village under Polasara police station limits, has been admitted to MKCG Medical College and Hospital in Berhampur with serious burn injuries.
As per reports, Krushna was in a relationship with the victim girl. He brought the girl from her village to Pratappur today.
The couple reportedly picked an argument after the girl insisted that he marry her. The argument turned ugly when Krushna poured spirit on his lover and set her on fire.
The victim was rescued with severe burn injuries and rushed to the Community Health Centre in Purusottampur. After primary treatment, she was taken to MKCG Medical College and Hospital in Berhampur.
Her condition was stated to be critical when the report was filed.
Meanwhile, Purusottampur Police detained the accused person and started an investigation into the matter.