Ann Arbor police said that more than a dozen vehicles were broken into on the city's west side Sunday night and early Monday morning.
There also were a few reported during the day Monday on the south side, said Ann Arbor Sgt. Craig Flocken.
Police think a suspicious white conversion van spotted Sunday night could possibly be linked to the break-ins, Flocken said.
Hit hardest on the west side were vehicles on Arborview Boulevard south of Miller Avenue. Many cars were also broken into on Duncan Street in that same general area.
There were also vehicles broken into on Chaucer Drive on the city's southwest side, Flocken said
In many of the instances, the vehicle windows were broken.
"They were smashing out windows to get (inside)," Flocken said.
The suspect or suspects were stealing "anything of value" inside, he added.
Throughout Monday, there were a several more vehicle break-ins reported on the city's south side near South Industrial Highway and East Eisenhower Parkway.
No more information was released about the break-ins. Police continue to investigate.
An uptick in thefts from vehicles on the city's south side last week prompted Ann Arbor police to send out a crime alert last week.
John Counts covers cops and courts for AnnArbor.com. He can be reached at johncounts@annarbor.com or you can follow him on Twitter.