Rep. Elijah Cummings, a longtime Maryland Democrat has died at age 68.
His office confirmed he died of "complications concerning longstanding health challenges".
The congressman served as the chairman of the House Oversight and Reform Committee.
Rep. Cummings was also one of the key figures leading the investigations into President Donald Trump.
CNN reports he was first elected to the US Congress in 1996 and has served Maryland's 7th congressional district for 14 years.