BENGALURU: “Teach Amrutha a lesson for playing with his life” — this was the alleged threat made by two brothers before a 24-year-old woman was stabbed at her home in Bengaluru, police said.The woman, identified as Amrutha, succumbed to her injuries on Wednesday, two days after the attack. Police have arrested brothers Dhanush and Surya in connection with the murder.According to police, the brothers called Amrutha’s brother, Tejas, before the attack and allegedly warned that they would “teach Amrutha a lesson for playing with his (Dhanush) life.”Investigators said Surya went to Amrutha’s house on July 13 following instructions from his brother Dhanush. After an argument with Amrutha’s mother, Surya allegedly pulled out a knife and attacked Amrutha. Neighbours rushed her to hospital, while people at the spot caught Surya and handed him over to the police.Police said Amrutha, a resident of Jeevan Bima Nagar, died on Wednesday evening while undergoing treatment.The investigation revealed that Amrutha’s family and Dhanush’s family, both from Wilson Garden, had known each other for around three years after meeting at a religious event. Their friendship later developed into a relationship.According to police, Amrutha ended the relationship in March after allegedly discovering that Dhanush had concealed that he had previously been married, was divorced and had a child. Police believe the breakup triggered a dispute between the two families.Further investigation is underway.