curtis says they often end up on facebook marketplace. that s where officers found this power tool set for $350, $200 less than retail at home depot our cameras were there for the undercover buy. what s up this is unopened yeah, yes, sir. reporter: the police arrest him, saying he s a fugitive wanted for aggravated robbery in columbus and for buying these tools with a stolen credit card. 90% of our investigations actually involve an online marketplace reporter: kyle peneuer is senior manager of investigations for home depot they ve locked up high-theft products, and now they re testing new technology bluetooth activation the tool is useless until it s paid for. reporter: he says online resale makes it easy for criminals to hide and profit. can the online marketplaces do more to thwart these crimes should they do more? i think so. we would like to see that go back to the online marketplaces to do a better job of