Singer Jennifer Lopez's trip to Argentina was marred after a thief stole from her production team, according to reports.

Police have launched an investigation after a crook allegedly struck backstage at the G.E.B.A. Stadium in Buenos Aires on Thursday, making off with personal items belonging to Lopez's entourage.

A computer, a camera and a bag containing a passport belonging to a member of Lopez's production personnel were among the possessions taken, but a representative for the singer tells Fox News Latino that "items stolen last night at the venue were not Jennifer's."

The spokesperson went on to blame the incident on a "lack of security by the promoter and venue."

It's the second bout of bad luck Lopez has had on her Dance Again World Tour this week - she visited a hospital for an X-ray after pulling a muscle in her back.