The Delhi Police arrested two people on Monday in connection with the fatal shooting of a 32-year-old man inside a ward in the GTB Hospital by an unidentified person.

According to the police, the accused have been identified as 20 year old Faiz from Loni in Uttar Pradesh and Farhan from Chauhan Banger area in Delhi, but said they might not have been involved in actual firing of shots Sunday evening. The mastermind behind the attack is one person namely Faheem, alias Badshah Khan.

They said the Faiz and Farhan were allegedly involved in providing a motorcycle to four accused who went to the hospital. The four accused reached the GTB Hospital on that motorcycle, the police said. One of the four entered the ward number 24 and shot fires at the patient, killing him at the hospital bed.

"We are interrogating them (Faiz and Farhan) and will take their police remand to know about the one who shot the person (patient). Our teams are working round the clock to nab rest of the accused. They will be nabbed soon," Deputy Commissioner of Police (Shahdara) Surendra Choudhary said.

The attackers had gone to the hospital to kill a gangster, a rival of the Hasim Baba gang who was also shot at by some people on June 12 and was admitted in the same wards for some time,on the instructions of Faheem  but they shot dead Riyazuddin who was lying on the bed opposite to him.

Police also said the shooters had proper instruction on how they can escape from the hospital after committing the crime. "On Sunday, the GTB Enclave police registered a case of murder on the statement of Tarranum Malik. She told police that her brother Riyazuddin was fired upon by an unknown person inside ward number 24 of the GTB Hospital, where he was undergoing treatment," DCP Choudhary said.

The officer further said that the video footage from the cameras near the have been obtained. The CCTV footage from cameras on the ground floor was also obtained which show four people entering the hospital emergency gate.

"Multiple teams were formed to investigate the case and to nab the accused. Teams identified the people in the footage based on inputs. Their social media handles were also obtained and their mobile numbers were checked. We checked the call details and some more suspects were identified," said the DCP.

Police said that after checking call details, Faiz was arrested from Laxmi Garden area in Loni of Uttar Pradesh. "During interrogation, Faiz revealed that one Faheem alias Badshah Khan is the mastermind of the incident. Faiz and his two brothers -- Faujaan and Moin Khan -- usually meet Faheem who is an associate of the Hasim Baba gang and works for the gang," said the DCP, adding that one more suspect Farhan (whose age is not yet known) was also nabbed from Chauhan Banger area.