IPSWICH: Baffled engineers were still scratching their heads today over what caused a huge hole to open up in the road outside a primary school.

Ipswich Borough Council drafted in Anglian Water trouble-shooters yesterday to help assess the chasm in Sidegate Lane.

But results of the investigation are not expected to emerge until Monday.

The ground collapsed under the pavement and part of the road at around 2pm on Thursday in an area where pupils from Sidegate Primary School were due to walk as they started their new term less than 24 hours later.

However, headteacher Andrew Waterman said the area had been made safe and there had been no disruption to the school day.

He said: “There were no problems for kids coming in to school. It was helpful being able to let everyone know about it in advance.

“I am grateful for the support from parents in ensuring everyone got to school safely.”

The hole, about the size of a car underneath the concrete, is expected to remain cordoned off with temporary traffic lights in place for several days.

A spokesman for Ipswich Borough Council said: “Investigations are continuing. Engineers from Anglian Water are also looking at it.

“We won’t hear about the results of the investigation until Monday. Unfortunately, the traffic delays are set to continue into next week.”

n Do you have any theories over what caused the huge hole? Write to Your Letters, The Evening Star, 30 Lower Brook Street, Ipswich, IP4 1AN or send an e-mail to eveningstarletters@eveningstar.co.uk