By Stanley White
TOKYO, April 8 (Reuters) - Japanese stocks fell on Thursday as concerns about a spike in domestic coronavirus infections and a potential return of restrictions on economic activity prompted investors to lock in profit on recent gains.
The Nikkei 225 Index .N225 was down 0.38% at 29,618.93, as of 0203 GMT, while the broader Topix .TOPX declined 0.85% to 1,950.57.
The governor of Tokyo is considering adopting emergency measures in response to a sudden increase in coronavirus infections and the spread of a new variant of the virus, according to domestic media.
The western city of Osaka is also set to declare a medical emergency after its number of new infections rose to a record high, which has sparked alarm among public health officials.