Ameritrans Express LLC, a contract delivery service for the U.S. Postal Service, has filed for chapter 11 bankruptcy amid claims by some of its contractors that they have not been paid since March, Freight Waves reported. Ameritrans Express LLC, headquartered in Dumfries, Virginia, filed its petition in the U.S. Bankruptcy Court for the Eastern District of Virginia on Wednesday. The company was founded by Frederick Amankwaa in 2013 and is a contract delivery service provider for the Postal Service. Members of a Facebook group, which was set up by Ameritrans contractors in March, claim they haven’t been paid since then. One member of the group alleges she hasn’t been able to access the money she contributed to her 401(k) account.