India, May 21 -- India on Tuesday expelled a staffer of the Pakistan high commission in New Delhi for his alleged involvement in espionage, marking the second such expulsion in a little more than a week amid heightened tensions between the two countries.

The staffer was declared "persona non grata" on being found involved in spying, the people said on condition of anonymity. Another staffer of the Pakistani mission was expelled on similar grounds on May 13.

"The Government of India has declared a Pakistani official, working at the Pakistan High Commission in New Delhi, persona non grata for indulging in activities not in keeping with his official status in India," the external affairs ministry said in a statement without giving details ...