Goa, June 15 -- The devastating fire that claimed three lives in a residential building in Delhi's Tughlakabad area last Friday was a planned act of arson linked to a financial dispute between two cousins, police investigations have revealed.

Authorities have arrested three individuals - Niranjan (33), his brother Rajkumar (27), and Sarita (27) - in connection with the incident. A 17-year-old girl has also been detained for her alleged involvement. According to police, the woman and the minor were reportedly in relationships with the two accused men.

Investigators said the teenage girl confessed to setting a scooter parked on the ground floor ablaze shortly after midnight on June 12. The flames quickly spread through the building, reach...