In a surprise move, a Pakistani court on Thursday ordered the release of British-born al Qaida leader Ahmed Omar Saeed Sheikh and his three aides, who were convicted and sentenced in the abduction and murder case of US journalist Daniel Pearl.

A two-judge bench of the Sindh High Court, presided over by Justice K.K. Agha, directed security agencies not to keep Sheikh and other accused under “any sort of detention” and declared all notifications of the Sindh government related to their detention “null and void”. The court observed that the four men’s detention was “illegal”.

In April, a two-judge Sindh High Court bench commuted the death sentence of 46-year-old Sheikh to seven years imprisonment. The court also acquitted his three aides who were serving life terms in the case.

However, the Sindh government refused to release them and kept them in detention under the Maintenance of Public Order.

Their continuous detention was challenged in the Sindh High Court, which ordered their release. However, it asked to place their names on the no-fly list so that they could not leave the country. It also directed them to appear before the court whenever summoned. Pearl, the 38-year-old South Asia bureau chief for The Wall Street Journal, was abducted and beheaded while he was in Pakistan.