Two women have been left "very distressed" after a man indecently exposed himself in east London.

The man allegedly exposed himself indecently to elderly women through letterboxes in Dagenham in a series of incidents.

The incidents have all involved elderly women and occurred in the late evening of Tuesday, January 3 through to the morning of Wednesday, January 4.

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The man is reported to have first exposed himself to a woman through her letterbox in North Dagenham at around 10.15pm on January 3.

He then exposed himself in the same way to another elderly woman on Mayesbrook Road in Dagenham at about 11.05pm, according to police.

Officers believe he committed other offences that night of the same nature, also in the Dagenham area. 

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He is also believed to have been looking through windows, knocking on doors, and acting suspiciously on Lilliechurch Road in Dagenham. 

Police are appealing for information following the series of incidents.

The man is described as wearing dark clothing and a black crash helmet during all the incidents and riding a dark colored motorbike or moped.

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Detective Constable Sky Mulvey from the East Area Command Unit said: "These incidents were very distressing for the victims and we are determined to swiftly bring the person resonsible to justice.

"We are extremely keen to get information, CCTV or door cam/doorbell footage in connection with the incidents.

"If you know who this man is, please contact us, or Crimestoppers anonymously, as a matter of urgency."

Any witnesses or anyone with any information is asked to call police on 101 or contact via Twitter @MetCC, quoting reference CAD 4471/04JAN.

To give information anonymously, contact the independent charity Crimestoppers on 0800 555 111.