( CNN ) -- Hours after his family members alerted police to a human head and two hands they discovered stashed in metal tins , a Maryland man admitted killing his housemate , cutting him up , then eating his heart and part of his brain , authorities said . Alexander Kinyua , 21 , was being held without bail at the Harford County Detention Center after being charged with first-degree murder , first-degree assault and second-degree assault . Calls to his public defender Friday morning were not immediately returned . Suspect in Canada body parts probe described as 'creepy ' and a kitten-killer . His roommate , Kujoe Bonsafo Agyei-Kodie , had left his Joppatowne home six days earlier for an apparent early morning jog . Wearing a T-shirt and shorts , he left his wallet , cell phone and identification at home . On Tuesday , Antony Kinyua -- Alexander Kinyua 's father -- called a Harford County detective assigned to the missing person 's case and told him about his other son 's gruesome discovery . Miami mother : My son 'is no zombie ' According to the charging document , the other son explained to the detective how he had come across two metal tins covered by a blanket in the basement laundry room of Agyei-Kodie 's Joppatowne residence . He opened the tins and found the head and hands . The brother said he `` confronted ( Alexander Kinyua ) , who denied the remains were human , '' then went upstairs to get his father , the detective said in the charging document . When the father and son returned to the basement , `` the items he observed were gone and ... Alex Kinyua was cleaning the container he observed them in . '' Two Harford County detectives later arrived on the scene and discovered the head and hands on the home 's main floor . Reports : Miami 'zombie ' attacker may have been using 'bath salts ' `` He admitted to killing our missing person , Mr. Kodie , and cutting him up with a knife , '' Harford County Sheriff Jesse Bane told reporters Thursday . `` He further stated that he consumed Mr. Kodie 's internal organs -- specifically his heart and portions of his brain . '' The suspect told detectives to go to the parking lot of the nearby Town Baptist Church , where they could -- and did -- find the rest of Agyei-Kodie 's remains in a dumpster . The missing person 's report filed Saturday described the 37-year-old Agyei-Kodie as `` very intelligent . '' He had earned multiple master 's degrees from schools in Ghana and was also a graduate student at Morgan State University , even though he was n't taking classes there at the time of his death . Kinyua was affiliated with the same state university in Baltimore . The engineering student was one of 175 people showcased in an August 2011 symposium run by the prestigious Los Alamos National Laboratory . His study focused on the cost-effectiveness and productivity of `` comfort control '' systems regulating heating , ventilation and air conditioning .
Kujoe Bonsafo Agyei-Kodie , 37 , was reported missing last Saturday . His roommate 's relatives say three days later , they found a head and hands . The roommate later admitted to killing Agyei-Kodie , authorities say . He said he ate Agyei-Kodie 's heart and part of his brain , a sheriff says .