Responding to the allegations, Maharashtra State Election Commissioner DT Waghmare rejected claims of wrongdoing related to the ink.
Parab, a former state minister, alleged that Somaiya gave false information to Maharashtra Housing and Area Development Authority (MHADA) regarding alleged unauthorised construction by him on a MHADA plot in suburban Bandra East in Mumbai.
At least seven premises, including Parab's official residence in Mumbai, linked premises in Dapoli and Pune are being searched by the agency with a security escort provided by the Central Reserve Police Force (CRPF).
The ED had on Saturday issued summons for the second time to Parab, 56, who also holds the parliamentary affairs portfolio in the Maha Vikas Aghadi (MVA) government led by Chief Minister Uddhav Thackeray, for questioning in the case.