In a letter to the institute's director, Devang Vipin Khakhar, the People for the Ethical Treatment of Animals said the IIT "seemed apologetic" in clarifying that it had not banned non-vegetarian food items.
"We read about IIT Bombay's seemingly apologetic clarification that it has not banned non-vegetarian food. But we are writing to ask, why not?," it asked.
The institute, which faced protest from students opposing the "ban" on non-vegetarian food items at the cafe on its premises, clarified Monday "there is no restriction on the sale of non-vegetarian food items in the cafteria".
The IIT statement had come less than a month after one of its hostels asked students to use separate tables and plates for non-vegetarian and vegetarian food items at the mess, after receiving complaints from some vegetarian students.
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The PETA, however, urged the institute to take lead in banning non-veg food items and not bother about offending "meat addicts".
"The nation needs esteemed institutions like yours to make decisions beneficial to society based on science, even if it generates debates and discussion and even if it would temporarily offend meat addicts," it said.
Protecting the health of the public, animals, and the environment is absolutely the right thing to do, the PETA letter said.