Even hours after being alerted, the team of Health Department officials have not reached the spot. (Picture for representation: PTI)

A man who is suspected to be infected with coronavirus (Covid-190) has allegedly locked himself in his flat in Greater Noida. However, authorities said he has tested negative.

According to input, the man is a Chinese national and an Oppo employee. A panicked crowd of people has gathered at the man's residential complex in Greater Noida Beta 2 police station area.

Gautam Budh Nagar Chief Medical Officer Anurag Bhargava said, "He has tested negative for coronavirus".

Lat evening, a Paytm employee in Gurugram was also tested positive for novel coronavirus, the company said in a statement. With this case, the total number of positive cases of the virus in India stand at 29.

Sixteen Italians in India have tested positive for coronavirus, health minister Harsh Vardhan said on Wednesday.

On Monday, the world's second-most populous country had only six reported cases of coronavirus, but it is one of the places US intelligence agencies are most closely monitoring due to fears over how it would cope with a widespread outbreak.

Authorities are increasing screenings at airports and border crossings, and urging citizens to avoid large crowds.