The Los Angeles County Sheriff’s Dept. announced Thursday that it will reopen its investigation into the 1981 drowning death of Natalie Wood. “Recently Sheriff’s homicide investigators were contacted by persons who stated they had additional information about the Natalie Wood Wagner drowning,” the office claimed in a statement. “Due to the additional information, Sheriff’s homicide bureau has decided to take another look at the case.”

Authorities didn’t provide further details late Thursday and said a news conference on the matter will be held Friday at 11 a.m. (2 p.m. ET).

Last year, the actress’ sister, Lana Wood, and the captain of the yacht on which Wood sailed with her husband, actor Robert Wagner, had asked the sheriff’s office to reopen the case.

On Thursday, L.A. County Sheriff’s Deputy Benjamin Grubb couldn’t say whether the sister and the yacht captain have prompted the renewed investigation.

“I don’t know if that’s related, but that’s what the press conference is about tomorrow,” Grubb told CNN.