Media playback is unsupported on your device Media caption Shamima's sister Renu Begum addressed her in her appeal: ''We love you more than anybody could love you''

Relatives of three missing London girls say there were no signs they were planning to go to Syria, in emotional interviews appealing for their return.

It is feared Shamima Begum, Amira Abase, both 15, and Kadiza Sultana, 16, plan to join Islamic State.

Shamima's sister Renu urged her not to "do anything stupid", adding she is "our baby". Halima Khanom, Kadiza's sister, said: "Everyone is hurting."

Amira's father Abase Hussen said: "We cannot stop crying. Don't go to Syria."

Kadiza, Shamima and Amira flew from Gatwick to Turkey on Tuesday after telling their parents they were going out for the day - but it is not clear whether they have crossed into Syria.

Image copyright Met Police Image caption From left: Kadiza Sultana, Amira Abase and Shamima Begum flew to Turkey on Tuesday

In a tearful video, Ms Begum, 27, said there was no indication her younger sister had been thinking of leaving for Syria and said her disappearance had left "a big hole" in the family house.

She said Shamima had been "upset" after a friend from her school left for Syria and said the family was hoping the girls had "gone to go and bring her back".

Shamima was last seen on Tuesday morning when she was dropped off at a bus stop, claiming she had extra classes at school.

"There was no indication whatsoever. She was just herself. There was nothing different about her. There were no changes in her behaviour in anything. She was just our baby, she was just herself," Ms Begum said.

"We don't want her to do anything stupid - she is a sensible girl," she said, adding: "We just want her home, we want her safe."

Ms Begun said the three girls were "young" and "vulnerable" and if anybody had tried to persuade them to go to Syria it was a "cruel and evil" thing to do.

"They're preying on young innocent girls and it's not right," she added.

'Please think twice'

Media playback is unsupported on your device Media caption Abase Hussen said his daughter had said goodbye to him in a normal way: "There was no sign to suspect her at all"

Mr Hussen said his daughter, Amira, had told him she was going to a wedding on Tuesday and sent a text between 10:00 and 11:00 GMT.

"She said, 'Dad the place is a little bit far. I pray my midday prayer and I get back.' She didn't come home," he said.

The family reported Amira as missing that night.

"We are depressed, and it's very stressful," he said while holding a teddy Amira had given her mother for Mother's Day.

"The message we have for Amira is to get back home. We miss you. We cannot stop crying. Please think twice. Don't go to Syria."

He said his daughter had never spoken about an interest in the militant group with him.

"She doesn't dare discuss something like this with us. She knows what the answer would be," he said.

In a further direct appeal to his daughter, he said: "Remember how we love you. Your sister and brother cannot stop crying."

Media playback is unsupported on your device Media caption In a statement, the sister of Kadiza Sultana - Halima Khanom - said ''we all miss you and love you''

Halima Khanom, the eldest sister of Kadiza, said her family was "hurting" and urged her to contact them.

In a direct appeal, she said: "Find the courage in your heart to contact us and let us know that you are safe and you are okay. That is all we ask of you."

Police say the girls boarded a Turkish Airlines flight, which departed from Gatwick Airport at 12:40 GMT for Istanbul.

Officers said the girls had previously been interviewed after another girl from their school - Bethnal Green Academy, in east London - went to Syria in December, but nothing had indicated they were at risk.

'Questions to answer'

Image copyright PA Image caption Family members of Amira Abase and Shamima Begum after making the appeals

Image copyright PA Image caption Renu, the eldest sister of missing British girl Shamima Begum, holds a picture of her sister

Image copyright PA Image caption A "No. 1 Mum" Chelsea FC teddy that Amira gave to her mother on Mother's Day

Image copyright Met Police Image caption CCTV footage captured Amira, Shamima and Kadiza at Gatwick Airport

Meanwhile, the family of a Glasgow woman who may have encouraged the three girls to join IS said officials had "failed" to stop them leaving the UK.

Aqsa Mahmood, 20, who went to Syria to be a "jihadi bride" in 2013, uses a Twitter account to encourage British women to join her. Last Sunday, Shamima sent her a message via Twitter.

In a statement, Ms Mahmood's family said she was a "disgrace" to the family and they were "full of horror and anger" that she may have had "a role to play" in recruiting the girls.

"However, the security services have serious questions to answer," the family added.

Scotland Yard said it would not discuss matters of surveillance and security.