Police in Marin County, Calif., say a GPS device led them straight to three suspects in the murder of a hiker found shot to death still clutching his dog's leash.

Two men and a woman were arrested in a restaurant in Portland, Ore., Wednesday afternoon by police who had tracked the stolen station wagon of 67-year-old tantric yoga teacher Steve Carter, the San Francisco Chronicle reports; it notes the GPS device was "embedded in the car." Police say the three suspects are drifters and the killing appears to have been random, reports KTVU.

They've been identified as Morrison Lampley, 23, Sean Angold, 24, and Lila Allgood, 18. Police also thanked the community for numerous tips that helped them find the suspects and track their movements.

No motive has been disclosed. Carter—who was the caretaker for his wife, who had cancer—was shot multiple times after encountering the killers on a trail in the Loma Alta Open Space Preserve on Monday, the Chronicle reports.

Residents say they were stunned by the murder of the beloved teacher, who ran workshops for couples. "I'm absolutely shocked," a San Anselmo resident tells KTVU.

"I would never expect something like that along the hiking trails around here. I've lived here for 38 years. I've never heard of anything like that." Carter's Doberman pinscher was also shot but is expected to survive.

(A GPS app recently led this woman to her death.)

This article originally appeared on Newser: GPS Leads Cops to 3 Suspects in Hiker Murder

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