CEDAR RAPIDS, Iowa (KCRG) – The body found near Amana Lily Lake over the weekend has now been identified as that of a Marion woman. Investigators say Melody Hoffman, 20, was found Sunday morning near the picnic area of the lake. A man from Hiawatha, McKinley Louisma, 23, is in the Linn County jail on charges of first-degree kidnapping and conspiracy to commit forcible felony.

Court filings detail what investigators say happened after Louisma picked Hoffman up at 11:00 p.m. Saturday. Investigators used data from Hoffman’s iPhone and Apple watch to piece together the story. They determined Hoffman was at Morgan Creek Park in Linn County when her Apple Watch recorded her heartbeat intensify before “it either stopped or the device deactivated.”

Louisma told investigators he and another unidentified person bound Hoffman’s wrists with duct tape, put her in the trunk of the car, and drove to several locations until they reached Lily Lake in Amana. Louisma admitted Hoffman begged to be let go, was beaten, and had numerous stab wounds. The Iowa State Medical Examiner’s Office says the preliminary cause of death was strangulation.

Court documents show Louisma was part of two previous investigations involving accusations of violence. One was in Manchester involving sexual assault. The other was in Cedar Rapids claiming Louisma attacked a man, causing serious injury. Louisma was out on bond when investigators say he kidnapped Hoffman.

According to the family, a Memorial Account has been established for donations at Collins Community Credit Union under “Memorial for Melody.” Family members are also accepting donations via Venmo using the account @memorial-for-Melody. Family members say the donations will be used to help pay for funeral services.