When it comes to meeting people on Tinder, we’ve all heard the warnings: Meet in a public place, make sure your friends know where you are, come up with an emergency code should things go awry. But what happens when your match ends up being wanted for murder?

According to Jezebel, a San Francisco man who described himself as a “Tinder Enthusiast” is accused of murdering his girlfriend and now police are reaching out to his matches on the dating app for answers. Authorities believe 38-year-old James Woo murdered his ex-girlfriend, 33-year-old Julie Tureson, and stashed her body away.

Hours after she was reported as missing, her body was found inside a van which was sitting inside a storage unit owned by Woo. Medical examiners are working on a cause of death, which will be determined once a toxicology report is completed.

Woo was detained by Homeland Security at Seattle-Tacoma International Airport apparently trying to leave for Hong Kong. Now in custody, police are looking to his Tinder matches to see if they can provide any clues as to why he would murder his ex. They would like to talk to anyone who has e-mailed, texted or met with him.

There also appears to be no other victims.