A 29-year-old Sun Prairie woman and a 46-year-old Fitchburg man were the victim of a trio of car crashes near the 1800 block of South Stoughton Rd. at about 4 p.m. on Wednesday.

Madison police said that Antonio Estrada-Manjarrez, 18, of Madison, and Carlos Manjarrez-De La Paz, 19, of Madison, first rear-ended the Sun Prairie woman's car at the intersection of Pflaum Rd. and Stoughton Rd.

She told police that she got out of the car and saw the men switching spots in the front seat.  She also said when the new driver started to pull into a nearby parking lot, he struck the back of her car again.  Then the woman said the man sped away, hit a curb and struck another car head-on and flipped over.

The Fitchburg man was driving the second car.

Madison police are investigating an early morning armed home invasion on the city's East Side Tuesday.

Police said three masked men forced their way into a home on South Walbridge Avenue around 2:15 a.m. and pistol-whipped a husband and wife during an armed robbery.

The couple's 18-year-old son was not injured.

Police said the men stole electronic items, jewelry, cell phones and cash.

Two intruders were armed with handguns while the third had a rifle, police said.

One intruder made some remarks indicating he knew the son. But the victims said they did not recognize the young men with the guns, police said.