Democratic Rep. Elijah Cummings died Thursday after what his office described as "complications concerning longstanding health challenges." He was 68.

Cummings, D-Md., passed away at 2:45 a.m. ET at Baltimore's Johns Hopkins Hospital, his office said in a brief statement. 

Cummings had represented Maryland's 7th Congressional District since 1996 and was at the center of the impeachment inquiry into President Donald Trump, in his role as House Oversight Committee Chairman.