The Shelton Police Department is investigating a suspicious death. According to a news release, an apartment manager called Shelton Police Tuesday asking for a welfare check on resident that had not been seen or heard from recently. Shelton Police officers entered the apartment and found a 57-year-old female deceased. The female appeared to be the resident of the apartment and has been deceased for an extended period of time. Investigators from the Shelton Police Department are currently investigating this suspicious death and attempting to locate family members. No other information has been released.