Police are seeking a European arrest warrant as they step up their effort to trace a mother on the run with her seven-year-old son.

Max Bagnall, from Rochester, has not been seen since March after his mother Jolanta Majda took him out of school and fled after a Polish court ruled he should be returned to his father, Alex, in the UK.

Mr Bagnall has had no contact with his son since last August and the case has been raised with David Cameron in Prime Minister’s Questions.

The UK police have put in an application to the Crown Prosecution Service for a European arrest warrant for Ms Majda, after they agreed there is enough evidence to charge the 31-year-old with abduction.

Both the police and the CPS have also been in contact with the Polish police to discuss extraditing her, once she is found.

Rochester and Strood MP, Kelly Tolhurst, said this week: “The investigation as to the whereabouts of Max and Ms Majda is in the hands of the Polish Police.

“I have spoken with UK Police this morning and I understand they are communicating with their Polish counterparts to ascertain the Polish authorities’ intentions towards Ms Majda now that she has breached a Polish Court order and abducted Max.

“I have also raised this case directly with a Polish MP in a face-to-face meeting, in an effort to focus political attention in Poland on this case.

“I am expecting further information from him shortly.

“In the meantime, I am in regular contact with both the Bagnall family and UK Police, and am offering all available assistance in order to secure the safe return of Max to his family.”

The family have created a Facebook group to share information about the search for Max, called #BringMaxBack.

They have been fighting a legal battle at home and abroad, and two months ago a High Court judge in Poland agreed with a UK ruling that Max should be brought home immediately.

But Miss Majda took Max out of school, deleted her phone number and social media account, and has disappeared.

Max’s grandfather Andy Bagnall, said despite the application for the warrant the family are no closer to bringing Max home.

The 47-year-old said: “The news is great as it is some movement, but the reality is, it can take up to a year to sort out.

“The police are 95% certain they know where they are but they have still not located her.

“The courts do not seem interested in enforcing their decision that Max should be returned.

“It is extremely frustrating when David Cameron and Jeremy Corbyn find the time to congratulate Leicester on their Premiership win and exchange jokes about team support, but in almost nine months they will not lift a single finger to protect Max and presumably other vulnerable children.

“The question on our lips every day as we chase people and departments in UK and Poland is why is no one concerned about a missing child and why is this not escalated to the top of the tree. Mr Cameron needs to honour his words in the House of Commons and intervene now.”