Patton Oswalt's Heartbreaking Message About Losing His Wife: 'Funerals Are Final But There's No Closure'

Patton Oswalt shared a poignant message on Twitter early Monday in honor of his late wife Michelle McNamara, who died suddenly in her sleep just over a month ago at age 46.

Written alongside a photo of McNamara, Oswalt’s note read: “Funerals are final but there’s no closure. Memorials are hopeful but they don’t bring back the dead."

McNamara, a crime writer, and Oswalt, 47, were married in 2005 after meeting in Los Angeles on May 20, 2003. The pair shares a daughter, 7-year-old Alice.

No cause of death was given, and an official at the Los Angeles County Coroner’s Office told PEOPLE it would most likely take months as the office has a backlog of cases.

Oswalt previously told PEOPLE that he’s felt overwhelming support since McNamara’s death.

"They have – with no exaggerating – saved my life. Saved my daughter’s life. And crystalized Michelle’s memory into a flame that warms rather than burns,” said Oswalt. “I will never, ever be able to repay her and my family’s generosity and my friend’s selflessness. It’s beyond me being able to articulate except to say an awed, ‘Thank you.’ ”