In April the same court commuted the death sentence of the main suspect and acquitted three others.
Ahmed Omar Saeed Sheikh was sentenced to death in 2002 for the killing of Pearl, but his conviction has recently been overturned, and is now being re-examined by the appeals courts.
In March, the Sindh Province’s high court in Karachi overturned the murder conviction of the man sentenced to death for masterminding the kidnapping and beheading in 2002.
"We're standing up for justice, not only for our son, but for all our dear friends in Pakistan so they can live in a society free of violence and terrorism."
Pearl, 38, was investigating Islamist militants in Karachi after the Sept. 11, 2001, attacks on the United States when he was kidnapped in January 2002.
The Sindh provincial government's Home Department issued the order to arrest and detain the four before they were released from prison.
Pearl said that his life experience and the rise of “Zionophobic” racism in academia had made it “necessary” for him to take a stand.
"This sad happening at NYU unveils the power of ignorance in the electronic age," he wrote on Twitter.
Terrorist also suspect in assassination attempt against former president Musharra.