Sheikh Hasina, Prime Minister of Bangladesh is sometimes called Hasina
His songs include work from the film Baaghi, composed by Anand-Milind: "Ek chanchal shokh hasina," "Chandni raat hai" and "Har kasam se badi hai."
This was followed by a grenade attack on Hasina during a public meeting on August 21, 2004, resulting in the death of 22 party supporters, including party women's secretary Ivy Rahman, though Hasina lived.
The pact was severely criticised within Bangladesh and by various leaders of the Awami League such as party presidium member Amir Hossain Amu, who criticised Sheikh Hasina for signing the pact without discussing it with other party leaders.
Karthik took part in the dance reality show Ek Khiladi Ek Hasina partnering with Nigaar Khan.
Along with other technical nominations, Ek Hasina Thi won the Best Screenplay and Best Editing at the Star Screen and Zee Cine award ceremonies, respectively.