Two Erebus-class titans were killed today in P3EN-E, Vale of the Silent, which were the first titans killed in the war zone. They both belonged to Pandemic Legion. They were reported taking part in a biweekly re-staging exercise to hone their skills in packing up and moving. It was at the midpoint of that op that one was left AFK on the Keepstar.
Sources report that the first loss started when someone broke into the move op fleet and secured a command position. The titan was fleet warped into bubbles. The second titan, however, was flagged exempt, so it was kicked and then re-invited to the fleet, at which point it was fleet warped as well. As it was undocking at the time, the warp happened instantaneously.
PH rage pinged for both subs and capital class ships, reporting that only one titan had been tackled. By the time they formed they were only able to catch one dread on the way out.
The full battle report can be found here At time of writing, only one titan is showing up on BRs.
Update: A video has been published by an Initiative. member showing one of the two kills.