Senator Uwajumogu, a Senator represents Imo North Senatorial District, is dead.
His death was confirmed to journalists outside the Senate chamber on Wednesday by the Senator representing Imo West Senatorial District, Rochas Okorocha.
The late lawmaker reportedly slumped and was taken to a private hospital in Abuja where he was confirmed dead.
The death of the senator is the second to be recorded in the ninth assembly since its inauguration in June.
Jafaru Iliyasu Auna, a house of representatives member, died earlier in the month.
Uwajumogu appeared healthy and even contributed to debates on the floor of the upper legislative chamber on Tuesday.
“I was with him yesterday in his office. I was with him till 4pm yesterday. It is sad,” the associate.
Mr Uwajumogu was a member of the ruling All Progressives Congress.
Source gathered that Uwajumogu was initially treated in the United Arab Emirates for his protracted illness, but recently returned to Abuja after showing signs of recovery, according to a source familiar with his situation.
Until his death, Uwajumogu was the senate committee chairman on employment, labour and productivity.