Background
Between April and September 2020, Joseph Gabriel Van Eck approached three women in the Denver metro area offering rides and forcibly dragged a fourth into his vehicle. All four women testified he drove them to a trailhead west of Denver and sexually assaulted them. Van Eck denied the assaults, claiming at trial that the encounters were consensual paid sex and that the women fabricated the accusations. He was charged with multiple counts of sexual assault, attempted sexual assault, unlawful sexual contact, kidnapping, second degree assault, theft, and soliciting prostitution.
After arresting Van Eck, police obtained a warrant to search his cell phone. The supporting affidavit summarized victim interviews and Van Eck’s own statements but did not mention any victim reporting that Van Eck used his phone during the assaults or communicated with them via social media. The warrant nonetheless authorized searches of social media communications, all text messages and call logs, all photo and video files, GPS data, and subscriber information. The phone search yielded sexual encounter videos with two victims — including one victim, M.P., who police had not yet identified — as well as a text message Van Eck sent the day after one assault showing cash with the caption “From last night’s escapade.” The jury convicted Van Eck on most counts.
On appeal, Van Eck challenged the warrant’s validity, the trial court’s denial of a mistrial after charges relating to three additional alleged victims were dismissed mid-trial, and the preclusion of cross-examination about whether the women engaged in consensual sex work. The prosecution cross-appealed an evidentiary ruling regarding the M.P. video.
The Court’s Holding
The Court of Appeals held that three of the five categories of searches authorized by the cell phone warrant were constitutionally defective. The authorization to search social media communications lacked probable cause because the affidavit contained no facts connecting Van Eck’s social media use to the alleged crimes. The authorization to search all text messages lacked the required particularity — the warrant was not limited to communications with or about the victims, to relevant dates, or to the specific criminal activity at issue. And the authorization to search all photo and video files was based on a bare-bones affidavit: the only stated basis was a generalized assertion that “serial criminals” commonly document their activities through photos and videos, which the court found indistinguishable from conduct common to virtually all cell phone users and insufficient to supply probable cause or to support good faith reliance on the warrant.
Because the good faith exception did not apply to the text or photo/video searches, the court applied the exclusionary rule. The text message (the cash photo) was admitted in error, but that error was harmless beyond a reasonable doubt given Van Eck’s own admissions about taking the victim’s backpack. However, the videos of victims M.P. and B.H. should have been suppressed. Because M.P. was identified only after police found the video on Van Eck’s phone, all evidence related to her — including her trial testimony — was fruit of the poisonous tree and likewise required suppression. Given the graphic and emotionally powerful nature of the videos, the court could not find their admission harmless, and reversed Van Eck’s convictions for sexual assault, attempted sexual assault, and unlawful sexual contact, along with all counts related to M.P. The GPS and subscriber information searches were upheld as valid.
The court affirmed the denial of a mistrial arising from the mid-trial dismissal of counts related to three other alleged victims, concluding the prosecution had not acted in bad faith and the trial court’s limiting instructions were adequate to prevent manifest prejudice. The court also found no reversible error in the preclusion of cross-examination about alleged consensual sex work, and affirmed Van Eck’s theft conviction.
Key Takeaways
- Boilerplate or generalized assertions about how “serial criminals” use cell phones — even when attributed to an officer’s training and experience — are insufficient to establish probable cause for a cell phone photo and video search; there must be a case-specific nexus between the suspected criminal activity and the phone’s contents.
- A warrant authorizing a search of all text messages, without limitation to specific victims, dates, or the alleged criminal conduct, fails the Fourth Amendment’s particularity requirement, and the good faith exception will not save it where the facial deficiency would have been apparent to a reasonable officer.
- Evidence — including witness testimony — derived solely from an unconstitutional cell phone search is fruit of the poisonous tree and must be suppressed; where the derivative evidence is sufficiently prejudicial, its admission is not harmless error and requires reversal even in cases involving particularly serious crimes.
- GPS location data and subscriber information searches survive Fourth Amendment scrutiny where the warrant affidavit establishes that the suspect possessed the phone and the search is limited to relevant times and incidents.
Why It Matters
This decision reinforces a growing body of post-Riley v. California case law demanding genuine, case-specific probable cause before courts authorize searches of cell phone contents. Colorado courts — joining federal courts in Texas, Washington, New York, and Pennsylvania — have now explicitly rejected the use of generic “criminals use phones” boilerplate as a substitute for actual investigative facts tying a suspect’s phone to the alleged offense. Law enforcement agencies and prosecutors in Colorado must ensure that cell phone warrant affidavits articulate specific, particularized facts connecting the device to the crime, not just general criminal behavior patterns.
The case also illustrates the potentially severe downstream consequences of a defective warrant in a multi-victim prosecution. Because police identified one victim solely through an unconstitutionally obtained video, every piece of evidence tied to that victim — including her live trial testimony — was suppressed as derivative of the initial Fourth Amendment violation. For defense practitioners, the decision underscores the value of preserving and fully developing cell phone suppression arguments; for prosecutors, it is a cautionary tale about the trial risks of relying on evidence gathered under broadly drawn warrants that may not survive appellate scrutiny.