ANKARA, June 10 Turkish Prime Minister Tayyip Erdogan said on Tuesday the Constitutional Court must explain its decision to overturn a government-led reform allowing students to wear Muslim headscarves at university.

Last week’s Constitutional Court ruling was the most serious setback for the Islamist-rooted AK Party since it came to power in 2002 and analysts said it increased the chances of the party being banned for Islamist activities, in a separate case.