Mettupalayam: The police on Tuesday arrested Anbarasan (10) on charges of setting fire to his playmate Gokulakrishnan (10) at Adi-Dravidar colony in Oomapalayam. The police said Gokulakrishnan was rushed to the hospital with burns. Initially, it was suspected to be a fire accident. After the boy gained consciousness, it was revealed that he was allegedly set fire by Anbarasan. It is learnt that the boys had a wordy duel while playing. Agitated over his mother being abused, Anbarasan is said to have doused kerosene on Gokulakrishnan and set fire to him. Anbarasan was sent to the observation home.