Here is the latest Iowa news from The Associated Press

DES MOINES, Iowa (AP) — Hillary Rodham Clinton made a surprise appearance at a Des Moines concert for her campaign headlined by pop singer Katy Perry on Saturday. She and her husband former President Bill Clinton urged Iowans to caucus for her on February 1st. Clinton, Vermont Senator Bernie Sanders and Martin O’Malley spoke to Iowa Democrats’ Jefferson-Jackson dinner last night.

WASHINGTON (AP) — Republican presidential contender Ben Carson is brushing off rival Donald Trump’s criticism of him as a “super low energy” candidate. Carson says he does have a tendency to be “relaxed.” But as a neurosurgeon who operated 18 to 20 hours at a time, he says he takes a backseat to no one when it comes to energy levels. Carson made the comments in an interview taped in Iowa for Sunday’s “Meet the Press” program on NBC.

SIOUX CITY, Iowa (AP) — Police are investigating a shooting outside a Sioux City home that injured two people. The Sioux City Journal reports that the shooting happened near 15th and Isabella streets about 11 p.m. Friday.

COUNCIL BLUFFS, Iowa (AP) — A Council Bluffs man has been arrested after police say he threw a large, plastic playhouse at an officer Thursday night. The Daily Nonpareil reports that 34-year-old Joseph Stoddard was arrest early Friday on suspicion of twice violating a no-contact order, second-degree burglary, disorderly contact, interference with official acts and three counts of assaulting an officer. Stoddard remains in the Pottawattamie County Jail on $15,000 bond.