BENGALURU: Three more cases of Covid-19 infections have been confirmed in Karnataka, taking the total number of patients testing positive in the state to four. All the four hail from Bengaluru.The three fresh cases were reported during the last 24 hours, a press release from Indian Council of Medical Research (ICMR) said on Tuesday morning."On Tuesday, Karnataka reported three more positive cases. The three new cases involve wife and daughter of the Bengaluru techie who had tested positive for Covid-19 on Monday. We will share more details in the evening press conference," said Pankaj Kumar Pandey, commissioner, health and family welfare department, Karnataka.Karnataka reported its first positive case on Monday with a 41-year-old man from Bengaluru who returned from the US via Dubai testing positive for the infection. The man is currently under treatment at Rajiv Gandhi Institute of Chest Diseases, Bengaluru where isolation wards have been set up to treat Covid-19 suspected and positive patients.His wife, daughter and a colleague were admitted to the hospital on Sunday after they showed symptoms. The colleague had travelled with the infected man from the US and was also exposed to him at their workplace in Bengaluru. Their samples were sent for testing on Monday.Karnataka is awaiting results of 68 samples sent for testing on Monday.