Justice Manual § 9-116.195

If a state or local law enforcement agency commences a forfeiture action under state law, no federal forfeiture action may be commenced as long as the state court has jurisdiction over the subject property. If, however, the state or local authorities determine, for whatever reason, that the state action will be terminated before it is completed, and that the property will accordingly be released, or a federal seizing agency otherwise learns that the state court is about to order the release of property that is federally forfeitable, a federal agency may arrange to seize the property by obtaining an anticipatory seizure warrant from a federal judge or magistrate. The anticipatory seizure warrant must provide that it will be executed only after the state court has relinquished control over the property.

For purposes of the notice requirements in section 983(a)(1), property seized pursuant to an anticipatory seizure warrant in these circumstances is considered the subject of a federal seizure such that the period for sending notice of the forfeiture action is 60 days, commencing on the date when the anticipatory seizure warrant is executed. See Chapter 1 of the Asset Forfeiture Policy Manual.