Walmart Stores Inc. and Sears Holdings Corp. said they would remove products bearing the Confederate flag from their stores and websites, a week after a white gunman shot nine dead at a historically black South Carolina church.

The move by the major retailers came the same day South Carolina Governor Nikki Haley called on lawmakers to take down the flag, considered by opponents to be a symbol of slavery and racism, at the state capitol grounds.

The accused white gunman posed with the flag in photos online. Supporters, who fly the flag or wear it on clothing, see it as a symbol of the South's history and culture, as well a memorial to the Confederate casualties during the 1861-65 Civil War.

A Walmart spokesman said the company does not want to offend anyone with the products it offers.

"We have taken steps to remove all items promoting the Confederate flag from our assortment - whether in our stores or on our website," spokesman Brian Nick said in a statement.

Walmart's website still showed the flag and other merchandise carrying the flag available for purchase.

Nick said Walmart has a process in place which helps them decide the merchandise they sell. Still, at times, items make their way into their assortment improperly. "This is one of those instances."

Sears, which operates Sears and Kmart stores, does not sell Confederate flags at its stores and has decided to remove sales of such merchandise by third parties on its online marketplace, said spokesman Chris Brathwaite.

A check on Target Corp's website did not show any flags being sold. A spokeswoman said she is checking with the company's merchandising team.

A search on found Confederate flags and merchandise featuring flag designs sold by third parties on Amazon's website and some shipped by Amazon on their merchants' behalf. Amazon itself did not appear to be selling the flags or related items.

The company did not immediately respond to requests for comment.

Rival Ebay Inc listed over 1,000 Confederate flags and related items offered by third-party sellers on its website. The company could not be immediately reached for comment.

Canadian chain pulling flags off shelves

In Canada, The Flag Shop has decided to pull the flag from shelves across Canada, CBC's Bonnie Allen reported.

Susan Braverman, president of the national chain, said the stores won't be allowed to display the flag. Online sales will be halted and The Flag Shop, which is also a manufacturer, won't produce new flags.

The Flag Shop store owners will still be allowed to sell the flag in certain exceptional cases, including as a prop or to some flag collectors who are known to store owners. 

With files from CBC News