Police in Kansas City are investigating after a motorist said he spotted a man carrying a baby in Lisa Irwin’s neighborhood the night the baby turned up missing.

KMBC-TV reports Mike Thompson said he saw the man wearing a T-shirt and carrying a baby near Lisa’s home at about 4 a.m. on Tuesday Oct. 4.

Thompson said he waited about a week before he called police because he didn’t immediately make the connection between what he saw and Lisa’s disappearance.

“I was going south on 435, I exited on 48th Street, and I see a man who was walking up Randolph carrying a baby,” Thompson told ABC News. “And I looked at him, he was about 30 feet from me, he turned and looked at me, and I looked at him. It’s 4 o’clock in the morning, 45 degrees and the baby doesn’t have a blanket, a coat, nothing. And this guy is walking down the street. I thought it was kind of weird.”

Thompson said the baby resembled Lisa, and that he would be able to identify the man if he ever saw him again. Thompson said he has been interviewed by police.

Meanwhile, police are denying word that a body has been found as they look for the missing baby. A widespread rumor made the rounds earlier in the week. The police posted the denial on a Twitter account. Authorities say the search for the missing baby is still active.