Kannadaplayback singerSushmitha, 27, allegedly committed suicide by hanging at her mother's residence in the city, police said on Monday.Her mother has alleged dowry harassment as reason for her daughter's death.She took the extreme step on Sunday night, police sources said.According to the sources, she got married to Sharath Kumar around one and half years ago.Differences between the couple cropped up later, forcing her to stay at her mother's house.The talented playback singer had crooned for Kannada movies like 'Srisamanya' and 'Haalu-Thuppa'.