Daniel Asiedu, the young man accused of murdering the late Member of Parliament (MP) for Abuakwa North, Joseph Boakye Danquah-Adu, has filed an application before a High Court in Accra to subpoena four people, including two New Patriotic Party (NPP) MPs, Kennedy Agyapong and Ursula Owusu-Ekufful to testify in his trial.