"Ma, the epitome of grace under pressure," Congress leader Rahul Gandhi said on Wednesday as he posted a picture on social media of his mother Sonia Gandhi sitting in an aircraft, wearing an oxygen mask.

The picture was of Tuesday when a New Delhi-bound chartered plane carrying former Congress presidents Sonia Gandhi and Rahul Gandhi made an "emergency" landing at the Bhopal airport, a police official said. However, airport Director Ramji Awasthi said it was a "priority landing" and not an "emergency landing".