Alec Baldwin hasn't yet come to terms with "everything that happened" regarding the death of cinematographer Halyna Hutchins this week.

The 63-year-old actor was holding the prop gun that misfired on the set of his film Rust, striking and killing Hutchins, 42, and wounding director Joel Souza on Thursday.

Alec Baldwin struggling with death of Halyna Hutchins

A range of details about the incident have emerged, but we still don't know precisely how the tragedy happened — i.e., why the gun was pointed at crew members. But Baldwin has found the incident to be "devastating," a source has now told People.

Alec Baldwin Addresses Fatal Gun Accident: "There Are No Words To Convey My Shock"

For more on the tragic incident and how Baldwin has responded to it so far, please watch the video above.