A Colorado mother accused of murdering two of her children and injuring a third was arrested in London over the holiday weekend after being on the run for days, the authorities said.

Kimberlee Singler, 35, was taken into custody on Saturday in the Kensington area of London, a spokeswoman for Britain’s National Crime Agency said on Tuesday.

Ms. Singler appeared before the Westminster Magistrates’ Court on Monday for an extradition hearing and will remain in custody until her next scheduled court appearance on Jan. 29, officials said.

The Colorado Springs Police Department had been searching for Ms. Singler for days after issuing a warrant for her arrest on Dec. 26. It was unclear why she had fled to Britain and what events led to her capture.

It was also unclear if Ms. Singler had obtained a lawyer.

The Colorado Springs Police Department did not immediately return a request for comment on Tuesday.

Ms. Singler was charged with four counts of first-degree murder, two counts of attempted first-degree murder, three counts of child abuse and one count of assault following a string of events last month.

On Dec. 19, Ms. Singler was found injured alongside her three children after the authorities received a report of a burglary at an apartment in Colorado Springs.

Ms. Singler and her 11-year-old daughter were treated for injuries at the scene by emergency medical workers before being taken to a hospital for further treatment, the police said. The authorities did not provide further information about the nature of their injuries or the causes of death for the 9-year-old girl and 7-year-old boy.

However, as their investigation progressed, the police “determined that the information of a reported burglary was unfounded,” a spokesman for the police department said.