Updated

Authorities in Northern California have dropped a murder charge against a teenager and instead charged his twin brother with the crime.

San Jose Deputy District Attorney Dan Fehderau says he has charged 18-year-old Anh Tong with murder after dropping charges against Anh's twin brother Duc Tong in the fatal stabbing of 22-year-old Richard Phan, a San Jose State University student.

The San Francisco Chronicle reports that Duc Tong is still not cleared. He faces two felony counts of acting as an accessory after a crime. Duc Tong is being held in lieu of $200,000 bail, and Anh Tong is being held without bail.

San Jose police say the brothers are identical, but Fehderau say they are fraternal twins.

Fehderau declined to say what led to the change in charges. KTVU.com reported that police said they took the two brothers in when witnesses could not determine which twin stabbed Phan.

The Associated Press contributed to this report