Confusion reigns over fate of detained migrant children

The fate of hundreds of undocumented children taken from parents remains unclear a day after President Donald Trump moved to roll back his policy.

He ordered on Wednesday that the children be held with their parents while they are detained on charges of crossing the border illegally.

But under US law, migrant children cannot be detained more than 20 days by immigration officials.

Melania Trump has visited a child immigration detention centre in Texas.

• Migrant families separation: The big picture explained

US officials have expressed mixed messages about what happens next to at least 2,300 children taken from their parents after illegally crossing the border since 5 May.

While the adults are held in custody pending court appearances, the children are being sent to holding cells, converted warehouses and desert tents.

What does Trump's executive order say?

The president's executive order suggests adults who illegally enter the US with children will still be prosecuted. It also calls for:

• Immigrant families to be detained together while their legal cases are considered

• Expediting immigration cases involving families

• Agencies, including the Pentagon, to construct facilities or make existing facilities available "for the housing and care of alien families"

Families seeking asylum meet with US CBP officials at the border

Is there a time limit on detentions?

If the administration wants to detain migrant families together indefinitely while their cases churn through the legal system, it will need Congress or the courts to change the existing rules.

Under a 1997 ruling, the Flores settlement, undocumented children can be detained for no longer than 20 days by US immigration officials.

Mr Trump's order requests the modification of this judgement.

But analysts say it is unlikely that limit on detaining minors can be overturned within the next 20 days.

Fleeing violence, migrant families make their way to the US border to apply for asylum

When will new policy take effect?

The New York Times reported that Gene Hamilton, a counsellor to Attorney General Jeff Sessions, mentioned an "implementation phase".

But an official for a division of the US Department of Health said no special effort would be made to reunite families already separated due to the "zero tolerance" policy.

Ken Wolfe was speaking for the Administration of Children and Families (ACF), which oversees where children are placed after they are separated from their parents.

He was later contradicted by Brian Marriott, senior communications director of the ACF, who said Mr Wolfe "misspoke".

US Customs and Border Protection (CBP) said in a statement on Thursday it was taking "immediate steps" to implement the president's order and reunite the children with their parents.

• Psychological impact on separated children

'I never heard from my son'

Guatemalan undocumented immigrant Beata Mejia Mejia is suing the US government for allegedly violating her human rights when they took away her son, Darwin, after she crossed the US border.

After near two weeks in detention in Arizona she says she asked for her son and was given a phone number.

"I rang and rang and they never answered, I never heard from my son."

She says she was finally allowed to speak to him by phone after being freed on bail paid for by her lawyers on 15 June once her asylum bid was allowed to go ahead.

"I sensed he was very sad," she says. "Like all mothers, I know my children, and I felt he's not well."

Abuse allegations surface

Immigrant children held in a detention centre in Virginia say they were handcuffed, beaten, left nude in concrete cells and strapped to chairs with bags over their heads, the Associated Press reported.

The Shenandoah Valley Juvenile Center denies the allegations.

According to another lawsuit, migrant children say they were forcibly administered drugs at the Shiloh Treatment Center near Houston, Texas.

Children were allegedly made to take psychiatric drugs while being told the pills were vitamins.

A migrant mother seeking asylum waits at a shelter in Mexico

What will happen to new arrivals?

CBP said that "family unity will be maintained for families apprehended crossing the border illegally, and they will be transferred together to US Immigration and Customs Enforcement".

There is only a current capacity of 3,335 beds in family detention centres run by US Immigration and Customs Enforcement, according to the federal budget figures.

Yet 420 parents and children are crossing the US-Mexico border every day, according to CBP data cited by NBC News.