Skirmish on Level 1313

In 21 BBY, a group of Black Sun assassins and mercenaries, including Naastau, besieged a Coruscant Guard base on Level 1313 under the orders of Vigo Xomit Grunseit.

The skirmish
Earlier in the day, two attempts to infiltrate the base were defeated by the clone troopers, and the base (and surrounding residences) was put on lockdown. The mercenaries waited in an abandoned refugee camp, built into the side of a deep and wide horizontal shaft that ran through the area, which recently became the secret hideout of a local crime lord allied with the Black Sun. After the lockdown was lifted, some of the mercenaries shimmied along the shaft and scaled the electric gate surrounding the base. They disabled the fence's security features and climbed into the building via an outside server machine, where they hid while another "unit" of mercenaries created a tunnel into the base's prison through the sewer pipe that ran along the ravine. As the prisoners were being freed, the first unit, now scattered throughout the base hiding in plain sight, disabled the base's alarms and activated a long-range jamming device before opening fire on the clones. Naastau, after having eliminated several clones, was eventually pushed back to the armory, where he held his position with a Z-6 rotary cannon from a nearby gun rack. The cannon was eventually destroyed by one of the clone trooper's blaster bolts, and Naastau fled the armory via a nearby ventilation duct. He emerged in the lower levels below a tangled network of catwalks and retractable bridges, where a group of special forces clone troopers were training. He was immediately noticed, though was stunned by a security droid before he could draw his blaster pistol.

Surviving mercenaries including Naastau were captured, though most of them were later given the opportunity of serving in the Penal Corps as opposed to life imprisonment. One of the captured mercenaries did attempt to grab an investigator's pistol while being interrogated, and he was immediately killed by another investigator, making him the final casualty of the skirmish.