A break-in and burglary took place at the Yogi Berra Museum and Learning Center on Tuesday night, according to the Montclair State Police Department.
On Thursday afternoon, police chief Paul M. Cell said several of Berra's World Series rings and two MVP plaques were stolen.
Berra was a three-time MVP during his 18 seasons with the Yankees. In 19 years as player, Berra appeared in 14 World Series, winning 10 of them. (Berra played four games for the Mets in 1965)
The museum is located on the Montclair State University campus in Little Falls, New Jersey. The museum, home to a trove of memorabilia from the 89-year-old Hall of Famer's career, opened in December 1998.
"We are saddened to learn of a break-in at the Yogi Berra Museum and Learning Center," museum director David Kaplan said in a statement Tuesday. "We are cooperating fully with the Montclair State University Police Department and other county, state and federal agencies that are assisting with this investigation."
The Montclair State Police Department said in a statement that it would be leading the investigation.
The Essex County Sheriff's Office is seeking the public's help. Sheriff Armando Fontoura said in a statement that its Crimestoppers program is offering "a cash reward of up to $5,000 for information that leads to the arrest of the suspects in the case."