From Wikipedia:

Admiral Isaki ordered a night torpedo attack, and his ships launched 31 Type 93 "Long Lance" torpedoes, as Jintsu illuminated the Allied fleet with her searchlights. The illumination was fatal, as Jintsu was hit by at least ten 6-inch (150 mm) shells from the Allied cruisers, setting her on fire. The barrage killed both Rear Admiral Isaki and Captain Sato; shortly afterwards a torpedo hit Jintsu starboard in the aft engine room.
As Captain Zenjiro Shimai of Yukikaze assumed command of the Japanese fleet and counterattacked (sinking Gwin, and damaging Leander and St Louis, Jintsu broke in two and sank at 07°38′S 157°06′E.