Nels Daniel Dan Niemi was a 42-year-old San Leandro Police Department officer who was killed on July 25, 2005 while responding to a disturbance on Doolittle Drive at about 11:00 PM. It was his second visit to that address that day. While speaking with residents, a man approached, pulled a handgun without warning, and shot Officer Niemi multiple times; he died at the scene. The suspect fled on foot but was apprehended the following day.

Officer Niemi had served three years with the department and is survived by his wife, son, and daughter. The suspect was later convicted of first-degree murder in May 2007 and was sentenced to death. A portion of Hays Street was renamed Dan Niemi Way in his honor.

If anyone knew Officer Niemi, saw activity on Doolittle Drive that night, or has information about the case, please share what is known.