General students at Rajshahi University (RU) yesterday morning formed a human chain in the city's Talaimari area demanding punishment of killers. Nima Parvin alias Lima, a first year student of management department, who was killed allegedly by her in-laws for dowry. The students at the human chain covered their faces with white cloth and displayed a shroud to show how Lima was tortured and killed for dowry. Lima died at her in-laws' house at village Jagirpara under Puthia upazila in Rajshahi on Thursday.