Message #143667

[Copperhead]

Current status
The last SFPD investigators of the case were Homicide Detail Inspectors Michael N. Maloney and Kelly Carroll. They were the first to submit DNA evidence from Zodiac's letters for analysis, which resulted in a partial genetic profile. DNA testing seems to have conclusively ruled out their lead suspect, Arthur Leigh Allen.[60]

In April 2004, the SFPD marked the case "inactive", citing caseload pressure and resource demands.[61] They reopened the case some time before March 2007 and returned evidence to Vallejo police for additional DNA testing, where the case has remained open.[62][63]

The Vallejo Police Department website maintains a link for providing Zodiac crime tips.[64] The case is also open in Napa County[62] and Riverside.[65]