India, Oct. 8 -- The food supplies department has received laboratory results for 20 out of 75 samples of kuttu (buckwheat) flour collected last month, after over 250 people fell ill during the Navratri fasting period in northwest Delhi.

Officials confirmed that none of the tested samples showed signs of contamination. Results for the remaining samples are expected next week.The second batch of sample results will also be in by next week, officials said.

A senior official said the department was exploring other possible causes behind the sudden spike in food-related illnesses reported from areas such as Rohini, Pitampura and Shalimar Bagh.

"The initial reports are clean. We are waiting for the rest before drawing any conclusions," offi...