COUNCIL BLUFFS, Iowa (AP) — Council Bluffs officials are trying to determine how far invasive zebra mussels have spread from one of the basins where the city draws drinking water from. The Daily Nonpareil reports the mussels were found during maintenance this fall, but it’s not clear if they have begun to colonize and clog the pipes leading into the city’s water treatment plant.

Water Works CEO and General Manager Doug Drummey says the zebra mussels don’t threaten water quality, but they can require costly repairs to clear pipes.The invasive mussels reproduce quickly and then attach themselves to hard surfaces. Drummey says most of the mussels found in September died because the water level was lowered for maintenance. But the pipes leading into the pond will be inspected this month.

The Council Bluffs Police Department reports the young male driver of a vehicle was injured during a rollover accident early this (Sunday) morning. A little after 3-a.m.,  Council Bluffs Police, along with Council Bluffs Fire and Rescue, responded to a rollover, personal injury crash at Interstate 80 East and the South Expressway.

Authorities say a 2009 Nissan 370-z was east bound on I-80 and failed to negotiate the curve on the off ramp. The vehicle went off the roadway and rolled at least one time before catching fire. The driver was able to get out of the vehicle and walk up to the roadway. He was transported by rescue squad to Creighton CHI for treatment. His injuries were not believed to be life threatening.

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The off ramp to South Expressway was closed until the vehicle could be removed. The name of the vehicle’s driver was not immediately released, because he is under the age of 18. The Council Bluffs Police Department’s Traffic Unit is investigating the accident.

Here is the latest Iowa news from The Associated Press at 3:40 a.m. CST

ANKENY, Iowa (AP) — Police have arrested a man they believe got out of his car at a busy Ankeny intersection and shot a handgun into another car. The Des Moines Register reports that the shooting happened Thanksgiving night at a heavily-populated intersection surrounded by restaurants and stores. Witnesses say the man got out of his car, knocked on the driver’s window of a car beside his, then fired his gun into the car before returning to his own car and speeding off.

CEDAR RAPIDS, Iowa (AP) — Two people are dead and two police officers have been injured in a crash in Cedar Rapids. A police news release says the officers were helping control traffic around a different crash on Interstate 380 early Saturday morning when a vehicle slammed into the back of a police car. Police say the crash killed two people in the vehicle that hit the police car. Two officers inside the police car were taken to local hospitals for treatment of their injuries.

ROCKWELL, Iowa (AP) — Investigators say one person has been killed and two others injured in a three-vehicle crash in northern Iowa. The Globe Gazette reports that the crash happed around 7:30 p.m. Friday on Highway 65 between Rockwell and Mason City. The Cerro Gordo County Sheriff’s Office says a northbound pickup crossed the center line, hitting a southbound car head-on. The third car also traveling south hit debris from the wreckage, causing it to spin out of control.

DES MOINES, Iowa (AP) — Officials have used some outside-the-terminal thinking to avoid having to build an estimated $100,000 indoor service dog bathroom at the Des Moines International Airport. Airport officials had revealed earlier this year that a “service animal relief area” would be built in a boarding area to comply with new federal regulations. But the Des Moines Register reports that the airport has found an alternative _ a grass area just outside the terminal.