[JURIST] Lebanon [JURIST news archive] on Wednesday released a former lawmaker questioned in the investigation into the killing of former Prime Minister Rafik Hariri [Wikipedia profile]. Nasser Qandil, a pro-Syrian legislator, refused to comment on what he told investigators after he turned himself in [Arabic News report] Tuesday to the UN commission [JURIST report] investigating the killing after a warrant was issued for his arrest. Four other pro-Syrian security officials remained in custody after being arrested [JURIST report] Tuesday. Lebanese President Emil Lahoud played down the arrests [Arabic News report] and said that no arrest warrants had been issued, a statement that contradicted media reports on the arrests. Media sources owned by the Hariri family reported that Qandil and the other four were questioned concerning a letter Qandil allegedly sent to Syria in support of assassinating Hariri. Investigators also searched two Beirut apartments Wednesday, in the latest of a series of breaks in the investigation into the February bombing that killed the former premier. AP has more.