Another two members of staff at Kent Police are being investigated over the death of a teenager from Tunbridge Wells, bringing the total number to five.

Matthew Mackell, a year 12 student from Skinners' Kent Academy, died in the early hours of May 7 in Dunorlan Park.

The Independent Office of Police Conduct (IOPC) launched an investigation into how police staff handled contact with the schoolboy who called 999 before taking his own life.

Last month it was announced a police officer and two members of staff from various roles within the control room were being investigated.

Now a further two members of staff, whose actions may have breached the standards of professional behaviour, have also been served with notices.

It follows a mandatory referral by the force to the IOPC.

Matthew's father Michael Bond said all he wants is the truth so no other family goes through the same heartache.

Mr Bond previously described the devastation he felt knowing his son asked police to pick him up, hours before he died.

The investigation found at 10.18pm, on May 6, the 17-year-old made an abandoned call to police. He said: “Can you send someone to pick me up, I’m about to kill myself.”

The call handler made attempts to call him back and two calls were answered by Matthew. On the first one, he said he was "okay", but on the second he hung up.

At 10.42pm, a member of staff managed to speak to Matthew "briefly" before the teenager "cleared the line".

Five minutes later, the staff member upgraded the incident to "immediate", updated Matthew's location to Dunorlan Park and "transferred it back to dispatch".

But, at 10.54pm, it was downgraded to "high" and the reason for doing so was that "our only available action is to continue contacting the phone for updates and information to identify the caller."

At 11.26pm, a police officer "asked if there were any patrol free for a tour of the area" and requested if the ambulance service had received any calls from Matthew's number, which "came back negative".

Between 11.39pm and 2.41am, three attempts were made to contact Matthew, but there was no answer.

During that time, there was also an attempt to deploy a police officer but they, too, did not answer.

According to the IOPC's information, there was no police search of Dunorlan Park completed in an attempt to find Matthew.

Once all the evidence has been reviewed, a final report will be produced. This could be as late as November.

The investigation does not mean that disciplinary action will follow as it may find the individuals did not breach any standards.

Matthew was laid to rest at the Kent and Sussex Crematorium in Tunbridge Wells on June 22.

A bench has been placed next to his grave stone and Mr Bond hopes it can soon be joined by a memorial cherry blossom

Help and support can be found at The Calm Zone and Fegans.

For confidential support on an emotional issue, call Samaritans on 116 123 at any time.

If you want to talk to someone confidentially, click here.

Read more: All the latest news from Tunbridge Wells