The police announced the arrest of a second man in the incident late last night.
Officials announced the arrest of the first guard on Wednesday.
Last week, the Government announced the arrest of four officers who were reported to be dealing in drugs.
The report did not explain the delay in announcing the arrest.
The police early today announced the arrest of a suspect in a murder that occurred more than 21 years ago.
The police announced late last night the arrest of a suspect in both stabbings.
The Chinese security authorities have announced the arrest of spies and been filming student leaders.
Yesterday, his office announced the arrest of a guard who allegedly took the unauthorized video.
On 26 July 2009, the government announced the arrest of the cleric for encouraging violence and terrorism.
In recent years Iran has announced the arrest of nuclear spies on a periodic basis.