
seinerseits
for his part
From his side; as far as he, or a person or thing referred to by 'er' (he) or 'es' (it), is concerned. The word can also express that someone responds in turn to a previous action or statement.
Der Minister kritisierte den Vorschlag und erklärte seinerseits, er werde einen eigenen Plan vorlegen.
The minister criticized the proposal and, for his part, stated that he would present a plan of his own.