A man in Raleigh, North Carolina, said that after he awoke from “a dream” early Friday morning, he found his wife “dead on the floor” and, as he told a 911 dispatcher, “I think I did it.”

“I have blood all over me, and there’s a bloody knife on the bed. And I think I did it,” Matthew James Phelps, an aspiring pastor, told the dispatcher. “I can’t believe this. I can’t believe this.”

Phelps, who jail records list as 28 years old, blamed his alleged black out on cough syrup he took earlier in the evening to help him sleep.

“I took more medicine that I should have,” he said. “I took Coricidin Cough and Cold ... because I know it can make you feel good. A lot of times I can’t sleep at night.”

The complete 911 call can be heard here: