This unit is also known as the Deep Penetration Unit DPU  and as the Mahasohon Brigade  Mahasohona is a demon, who made unexpected attacks at night, according to Sinhalese folklore hence literally meaning the Brigade who attacked clandestinely and unexpectedly. Before the misunderstanding was later cleared out and the arrested released, the names of the personnel involved in the unit were released to the public media, resulting in the assassination of several of them; the LRRP was later reformed and has resumed its activities following the resumption of hostilities after a ceasefire between the government and the LTTE was cancelled. The exact number of troops involved with the LRRP is not known, and neither the Sri Lanka Army nor the Sri Lankan government has officially acknowledged its existence; the unit is operated under the Directorate of Military Intelligence of the Army. It is believed to be composed of personnel from the Commando  and Special Forces  regiments of the Sri Lanka Army; these personnel have received specialized training in Sri Lanka and abroad.
HTTP - Forbidden
Since its inception as a combat tracker team in , the unit gradually expanded into a brigade consisting of several regiments. It is one of the top-secret units in the Sri Lanka Army. This group at the inception in had two Officers and 38 men and was to be tasked to carry out small group operations which have capability of operating deep in enemy territory against LTTE terrorism in time of war. With the massive successful results of the RDF it was gradually expanded to 04 squadrons. There has been no informative disclosure about the selection and induction processes of the Special Forces Brigade confirmed by the Sri Lankan Army.
SLA's Deep Penetration Unit responsible for Claymore attack - LTTE
The Deadly Mahasohon Brigade. Posted: Tue Jul 24, pm. Unexplained claymore mine explosions took place near tiger safe houses and sometimes even inside their own bases. Some of these explosions targeted senior LTTE leaders. One bomb exploded near a safe house which was used by the LTTE leader himself.
Throughout history the need for small, highly trained, far ranging units to perform reconnaissance, surveillance, target acquisition, and special type combat missions has been readily apparent. Confronted by an enemy adept at using terrain to mask movement, thereby leaving conventional forces blind to their intentions, it was only natural that the military should create a capability to monitor and disrupt deep within enemy-held territory. One false step, one small mistake by one man could mean sudden death for all. It is dangerous and exacting work, usually carried out by small, close-knit teams of five or six lightly equipped but well-armed volunteers, operating beyond artillery support in difficult country. Their tasks—to gather information, mount ambushes, and take the occasional prisoner-were vital if the Tamil rebles were to be denied the initiative.