FAIRFIELD — A town resident allegedly embezzled more than $300,000 from her father-in-law’s business while working as an office manager for the company.

Police said Kristen Deitz stole thousands from Deitz Inc. over two years by forging payment checks and depositing them into personal accounts and opening an unauthorized credit card she used for personal purchases.

Deitz Inc.’s owner reported financial discrepancies to police in October 2015. Kristen Deitz, a 37-year-old resident of Sigwin Drive in Fairfield, had been fired several weeks before after management noticed the concerns, police said.

Dating back to December 2013, detectives allegedly found 99 altered checks deposited into Deitz’s account. In purchases and forged checks, about $308,000 had gone missing, according to police.

Deitz turned herself in at police headquarters on Dec. 23. She was charged with first-degree larceny and first-degree forgery, both felonies. She has a Jan. 12 court date.

Lweiss@hearstmediact.com; @LauraEWeiss16