The number of active cases rose to 4,025, it said.
Of the 11 deaths, four each were from Kolkata and its twin city Howrah while two were reported from North 24 Parganas district and one from Hooghly, the bulletin said.
There were deaths of 72 other patients due to co-morbidities where COVID-19 was "incidental", it maintained.
In the last 24 hours, 9,686 samples have been tested, the bulletin said.
At least 144 people were discharged from different hospitals since Thursday evening after getting cured of the disease, taking the total number of recoveries to 2,912, it added. SCH ACD ABH ABH