On January 20 and 21, the Libyan National Army’s (LNA) 321 Battalion and Derna Mujahedeen Shura Council (DMSC) were reportedly shelling each other in the southern districts of Derna. The 321 Battalion are also said to have been firing heavy artillery on the western entrance of the city. The escalation of fighting follows the DMSC advance into areas once controlled by the LNA.