The journalist worked with a Hindi daily and was a resident of northeast Delhi's Bhajanpura, they said.
The incident took place at around 2 pm and the man was rushed to the hospital's ICU where doctors tried to revive him, a doctor said on condition of anonymity.
According to Devender Arya, Deputy Commissioner of Police (southwest), the journalist was admitted to the COVID-19 ward at the Trauma Centre on June 24 after testing positive for the virus.
"He was admitted to AIIMS Trauma Centre on June 24 and was apparently shifted to a High Dependency unit at the hospital. He was admitted on the first floor," a source at AIIMS said.
He had undergone a surgery for brain tumour recently, the doctor said. AMP/PLB RHL