The government has sought a report from the Indian embassy in Beijing regarding an Indian national who was detained in the Chinese city of Shenzhen.
"I have asked for a report from our embassy in China," External Affairs Minister Sushma Swaraj tweeted on Friday.
She was responding to a tweet which said that an Indian businessman who was working in Shenzhen with a resident permit and a business licence was taken by police on Tuesday.
"Wife has been released after questioning but my friend is detained with a notice of 30 days," the tweet said.
The tweet also said that the businessman's wife was alone in Shenzhen and the Chinese authorities were not allowing her to contact him.