The first sentance of the newspaper article seems out of place. Perhaps consider dropping it, or changing it to something like "Abandoned cars may be used for cult activities, Authorities report." In it's current form (Especially with the past tense usage of 'reported,') that line of the article feels rather akward.
In March, Mr. Absher started finding bonfires and sand drawings around in his scrapyard.
Perhaps change it to finding the remains of bonfires.
"I was worried that they will accidentally burn down the whole yard."
Usage of past and present tense makes this sentance akward. Consider changing 'will' to 'would.'
Further investigations only identified local teenagers Stuart Buschman, 19, and Margot Allsop, 17, on Tuesday.
Consider removing the word only.
Investigations are still going on.
'Going on' could be cut down to ongoing. It sounds more newspapery.
Further research yielded no results.
Possibly change 'research' to 'interrogation.'
Hope these suggestions help, at least a little.