"This important initiative has built on the good progress that was made a year ago when it was first launched and the achievements of these past weeks are to be welcomed.
"The work that has been undertaken by police in Lothian and Borders, Central and Fife has been assisted by members of the public who have provided information. I thank everyone who has assisted the police in this way.
"There should be no hiding place in our neighbourhoods for those who cash in on crime and this will continue to be a top priority for this Government and the new single police service when it goes live shortly."
More top news
Sandy Murray, of Police Scotland, was was giving evidence at the trial of a bus driver who denies killing Ryan Baird by dangerous driving.
34-year-old Christopher Peck was involved in a head-on crash with a drunk driver. His funeral has taken place in his hometown, Workington.
The arrests come weeks after a much-publicised series of appeals to mark the 30th anniversary of the 18-year-old's death.