VIDEO: See how officers were mauled by a dog while attempting to make an arrest in Albert Square

WARNING: THIS VIDEO CONTAINS GRAPHIC FOOTAGE, INCLUDING THE FATAL SHOOTING OF A DOG

The dog which mauled five police officers in Stratford yesterday was previously reported to police for allegedly biting a man in April last year.

Police investigated that incident but took no further action, the Metropolitan Police admitted last night.

The officers were attacked by the pitbull-type dog after attempting to arrest a man at a house in Albert Drive as part of Operation ‘Big Wing.’

Two have since been discharged from The Royal London Hospital in Whitechapel, while three remain under observation having been kept in overnight.

All five officers were injured in the attack at about 9am before a dog unit and CO19 Specialist Firearms Command attended the scene.

The dog was contained and subsequently shot dead.

Speaking yesterday, Commander Stephen Watson said the officers had “no intelligence” to suggest that a dangerous dog was at the scene and said he would now carry out a review into all the circumstances of the incident.

A Newham Council spokesman confirmed the council investigated a complaint that a dog had bitten a cyclist in Albert Square on April 28.

Its animal welfare officers subsequently visited the property in May 2011 but there was no response.

The spokesman said: This case was discussed by police and the council in June 2011.

“As this is now subject to a criminal investigation it would be inappropriate to comment further at this time.”

A 25-year-old man was arrested on the original matter he was sought for and remains in custody at an east London police station.

He has been further arrested on suspicion of offences under the Dangerous Dogs Act (DDA).