A man whose toddler was among eight people killed in a mass shooting in Erie, Pennsylvania, said Sunday that the gunman was a grandfather who never seemed distressed or out of the ordinary.

“I think that was a front for him,” Julius Windham said as he stood at a memorial to victims of Friday’s shooting, including his 1-year-old daughter Amarianna, her pregnant mother and the woman’s 5-year-old son and unborn baby.

“Him every day, him smiling and being just — you would think of nothing like that would happen,” Windham said.

The 45-year-old gunman took his own life. Authorities have not released his name, but Erie Police Chief Rick Lorah said he was related to seven of the victims. The eighth was a friend of the pregnant woman, he said. Police have not made their names public, either.