A man threw ink on Delhi Deputy Chief Minister Manish Sisodia outside Lt Governor Najeeb Jung's office on Monday.
He was speaking with journalists after meeting Jung when the person sneaked up and threw the ink quickly.
It scattered mostly on Sisodia's left arm and a part of his face, taking him by surprise.
When reporters asked the attacker the reason for the ink attack, he responded by saying: "People are dying in Delhi and you (Sisodia) prefer to go on a foreign (Finland) jaunt."
Sisodia, who is also the Education Minister, went to Finland to study the country's highly acclaimed educational system.
Delhi Chief Minister Arvind Kejriwal's media adviser Nagendar Sharma sought to know how the ink attacker knew that Sisodia would meet Jung.
"Why anger is not directed at BJP's MCD? Why no ink is thrown at BJP's MCD mayors and councillors?" Sharma asked in a tweet.
Later, in another tweet, he said: "Ink attack against Sisodia was planned Sunday night. Messages were sent to media from mobile 98103 60022 in advance."