Greater Noida, July 21 -- Investigation into the death of a 21-year-old Bachelor of Dental Surgery (BDS) second-year student in the hostel of Sharda University in Greater Noida's Knowledge Park on Friday revealed that there was a 90-minute gap between the college taking the woman to the hospital and informing the police, officers aware of the investigation said on Sunday. Police said that the delay raised suspicion and caused a misunderstanding, leading to a 16-hour demonstration on the campus. Sharda University dean Dr M Siddharth did not respond to calls and messages. A senior police officer associated with the investigation, requesting anonymity, said: "We received a memo from Sharda Hospital after 1.5 hours of the incident. By the time we reached, the deceased's parents were already there. The 90-minute gap raised suspicion and misunderstanding, which ignited protests and allegations. The college should have alerted 112 while rushing the girl to the hospital." On Friday, a second-year BDS student from Gurugram allegedly died by suicide in her room, 1209(C), on the 12th floor of Mandela Hostel around 8.45pm. Her neighbour, the occupant of 1209(B), raised the alarm after finding the body in the room. Based on the allegations and suicide note content, police arrested two teachers, assistant professor Shairy Vashist and associate professor Mahinder Singh Chouhan, for abetment to suicide. The investigating officer said: "During interrogation, they revealed that a few days back, they learned that the woman had forged their signatures on a manual of dental material. They produced her before the dean and called her father." "It was revealed that she was upset after they (professors) told her that she would face a backlog for forging their signatures. However, she refused to accept the allegations made by the professors," the investigator said. Her batchmates said she denied the allegation when confronted by professors in front of her parents. When she later approached the professors to get a manual signed, they allegedly threw it away. Her classmate said, "On Friday, she (deceased) approached both professors (arrested) to sign the manual after her complaint on June 14. They threw the manual at her and refused to sign. Manuals, a brief of the assignment, are important for us as we show them during practical exam that will start at the end of July. Our annual exam will start from July 22." Students also alleged that the college management took away the suicide note. A student, on condition of anonymity, said, "As the warden came to know that the girl who discovered her body had recovered the suicide note, they took her to an office and snatched the note." Police denied the claim and said the note was on the table and recovered during a forensic search. Investigators also said that the deceased did not have any backlog before the one imposed due to alleged forgery. In a statement on Sunday, Sharda University said they have formed a five-member internal committee headed by the pro-vice-chancellor to conduct an inquiry and submit a report within five days. Greater Noida, additional DCP, Sudhir Kumar said, "More arrests could be possible if any other name comes up during probe. We are also waiting for the college internal report that will be submitted in five days." "Statements of around seven people, including the warden and other employees of the college, have been recorded so far," a senior police officer said. Students said they have decided to resume the protest from Monday morning. "As the protest was curbed by police on Saturday, we have decided to hold a protest at the dental department on Monday, around 8am. We are also planning to conduct a candle march on Monday," said a second batchmate. "The professors had a habit of passing comments on appearance and personal life. We observed that she (deceased) was being targeted by professors," the student said....