By CBS3 Staff

PHILADELPHIA (CBS) — SEPTA officials say one of three alleged suspects is in custody in connection to the alleged assault of a postal employee. On Monday, SEPTA Transit Police Chief Thomas Nestel tweeted a photo of an alleged attacker authorities wanted to speak with in connection to the assault.

In th e tweet, Nestle also says a second suspect will be in custody shortly.

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The alleged assault happened around 7:30 p.m. Wednesday on the Broad Street Line platform at City Hall.

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According to police, surveillance video captured the attack and shows the suspects striking the postal worker as he fell to the ground.

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Anyone with information is urged to call 215-686-3093.