"Our appeal to the media is please don't jump to a conclusion because the way the incident is being projected is not right. We have launched a thorough investigation and the forensic team has visited the spot," Joint Commissioner of Police (Hqs) Javed Shamim said.
Asked whether Chief Minister Mamata Banerjee's statement that Gupta died after being hit by a lamp post would affect the investigation, Shamim said, "Why should it? I on the basis of the primary report had said the same thing."
Gupta had died on April 2 after falling off a police requisitioned bus in which he was being taken after his arrest following a rally to protest delay in holding student union elections.
The CPI(M) had alleged that Gupta died as a result of injuries from a police lathi-charge and demanded a judicial inquiry.