Complex sentence: When he arrived at Nicole's located at 875 South Bundy Drive, he was murdered along with Simpson on the walkway leading to the residence, just a few weeks shy of his 26th birthday.
Split into simpler sentences: When he arrived at Nicole's residence, located at 875 South Bundy Drive, he was murdered along with her on the walkway leading to the residence. He was just a few weeks shy of his 26th birthday.